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78 PREPARATION OF DIATOMS. However, Prof. H. L. Smith has invented a medium which possesses an exceedingly high index of refraction, viz. : 2-25 to 2-4. We have given a detailed description of the way in which this medium is pre- pared in the last English Edition of our Treatise on the Microscope, and we refer to this work for the details on this subject ('). Systematic preparations of Type Slides and selected d'atoms. Every microscopist is aquainted with the admirable type slides which were first introduced by Mr. J. D. Moller of Wedel, in 1867. I have a most vivid recollection of the appearance of the first slides (many of which are in my possession) and the seniation which they produced in the microscopical world. Mr. Moller employs a specially constructed microscope to make his type slides, and he adopts his own particular methods, which he has hitherto disclosed to but three or four persons, of whom I am fortunately one. I have now known it for a long time but am under an obligation not to reveal anything in connection with the subject. Other professional preparers and enthusiastic amateurs have applied themselves in the same direction, and if their results are not as perfect as Mr. Moller's a fact which anyone who has been initiated into his secret must recognise they at least approach very closely to per- fection ; the type slides of Thum of Leipzig for example are deserving of all praise. Type slides proper have not hitherto, so far as we know, been made other than by Moller and two enthusiastic and skilful amateurs, Mr. J. Kinker, of Amsterdam, and Mr. E. Weissflog, of Dresden, both of whom use Moller's process, and have produced genuine works of arts. Mr. E. Weissflog, especially, has made himself quite master of the art, and has produced most important type slides, as for instance that of Santa Monica, which contains about 600 forms. Such work requires long and difficult application. In connection with type slides we must not omit to mention the preparation of selected diatoms, i.e., preparations containing one or more isolated diatoms. These preparations are very valuable, and every diatomist ought to know how to make them. The methods moreover are very simple, and have been fully described by Mr. H. Peragallo, the eminent French diatomist, in his work on " Les Diatom'ees de la Bate de 2 V<strong>ill</strong>efranche" ( ) and I shall now quote all the passages in which our learned correspondent describes them : " I ( ) The Microscope, London, 1893, p. 305. 2 ( ) Paris, Librairie Ba<strong>ill</strong>ieYe, 1888,
^ oos PREPARATION OF DIATOMS. 79 use as sizing," says Mr. Peragallo, " the gum-tragacanth recommended by Professor Brun, of Geneva, and have always found it perfect ; its refractive index being nearly the same as that of glass, renders its presence invisible when the mounting is finished ; and moreover by using an aqueous solution of it the following great advantage is secured, namely, that all subsequent operations -*
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PRINTED BY W. E. BAXTER LIMITED, LF
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&rd&(?ea?c&if -Aetccac^
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vi. author's preface. Every effort
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Vlll. TRANSLATOR S PREFACE. In spit
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Page
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XII. CONTENTS. Genus 32. Anorthonei
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XIV. CONTENTS. Genus 68. .... Page
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XVI. CONTENTS. Genus 103. Genus 104
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XV111. CONTENTS. Genus 15?. Genus 1
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XX. Genkra dubia et Inceiote sedis
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2 THE STRUCTURE AND LIFE Finally, t
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4 THE STRUCTURE AND LIFE Mr. Otto M
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S 120 jio 100 ,9 THE STRUCTURE AND
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8 THE STRUCTURE AND LIFE concave on
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IO THE STRUCTURE AND LIFE ^y- ,.0 "
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12 THE STRUCTURE AND LIFE either si
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14 valve over each divided surface
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x 6 THE STRUCTURE AND LIFE matter i
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S THE STRUCTURE AND LIFE of Bacteri
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20 THE STRUCTURE AND LIFE F 'g- J 3
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22 THE STRUCTURE AND LIFE " I have
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24 STUDY OF DIATOMS. have undertake
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26 STUDY OF DIATOMS. Fig. 17. The V
Page 56 and 57: 28 DRAWING AND DETERMINING THE SPEC
Page 58 and 59: 30 COLLECTING DIATOMS. The only len
Page 60 and 61: 32 COLLECTING DIATOMS. " Let us ste
Page 62 and 63: 34 COLLECTING DIATOMS. ellipsis. On
Page 64 and 65: 36 COLLECTING DIATOMS. " The sand i
Page 66 and 67: 38 COLLECTING DIATOMS. at present e
Page 68 and 69: 40 COLLECTING DIATOMS. Special appa
Page 70 and 71: 42 COLLECTING DIATOMS. S.W.iW. or S
Page 72 and 73: 44 CULTIVATION OF DIATOMS. Dr. Macc
Page 74 and 75: 4 6 CULTIVATION OF DIATOMS. even th
Page 76 and 77: 48 CULTIVATION OF DIATOMS. A short
Page 78 and 79: 50 CULTIVATION OF DIATOMS. deranged
Page 80 and 81: 52 CULTIVATION OF DIATOMS. The puri
Page 82 and 83: 54 CULTIVATION OF DIATOMS liquid, s
Page 84 and 85: 56 TERATOLOGY OF DIATOMS. appreciab
Page 86 and 87: 58 TERATOLOGY OF DIATOMS. Deformed
Page 88 and 89: 60 TERATOLOGY OF DIATOMS. ii. Same
Page 90 and 91: 62 TERATOLOGY OF DIATOMS. " In the
Page 92 and 93: 64 TERATOLOGY OF DIATOMS. But not o
Page 94 and 95: 66 PREPARATION OF DIATOMS. diatoms
Page 96 and 97: 68 PREPARATION OF DIATOMS. cohering
Page 98 and 99: 70 PREPARATION OF DIATOMS. for the
Page 100 and 101: 72 fall to the bottom ; then PREPAR
Page 102 and 103: 74 PREPARATION OF DIATOMS. The liqu
Page 104 and 105: 76 PREPARATION OF DIATOMS. " This d
Page 108 and 109: 80 PREPARATION OF DIATOMS. or if I
Page 110 and 111: 82 PREPARATION OF DIATOMS. " These
Page 112 and 113: 84 TERMINOLOGY AND CLASSIFICATION O
Page 128 and 129: IOO TERMINOLOGY AND CLASSIFICATION
Page 130 and 131: 102 TERMINOLOGY AND CLASSIFICATION
Page 132 and 133: CHAPTER III. BIBLIOGRAPHY. i. Gener
Page 134 and 135: 106 BIBLIOGRAPHY. Ehrenberg (C. G.)
Page 136 and 137: 108 BIBLIOGRAPHY. Die chromatophore
Page 138 and 139: IIO BIBLIOGRAPHY. English Edition o
Page 140 and 141: 112 BIBLIOGRAPHY. from which the pr
Page 142 and 143: 114 BIBLIOGRAPHY. Bossey (Dr. Franc
Page 144 and 145: [l6 BIBLIOGRAPHY. On the presence o
Page 146 and 147: [l8 BIBLIOGRAPHY. On the analysis o
Page 148 and 149: 120 BIBLIOGRAPHY. On the British sp
Page 150 and 151: 122 MEASUREMENT. Unit of Measuremen
Page 152 and 153: 124 CYMBELLE.E. SUB-FAMILY I. RAPHI
Page 154 and 155: 126 AMPHORA. Connecting -[ zone not
Page 156 and 157:
128 AMPHORA. Very small. Frustule o
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130 AMPHORA. rather large, often fu
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f Fr 0. E o !3 2 AMPHORA. 5. Halamp
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134 AMPHORA. A. acutiuscula Kutz. (
Page 164 and 165:
j -g AMPHORA. Gregory's figure is v
Page 166 and 167:
138 AMPHORA. A. bacillaris Greg. (D
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140 CYMBELLA. ll quadrata Breb. ! (
Page 170 and 171:
142 CYMBELLA. Sect. i. Ventral and
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144 CYMBELLA. straight, slightly ar
Page 174 and 175:
146 CYM BELLA. C. abnormis Grun. (i
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148 ENCYONEMA. C. tumida Breb (Cocc
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150 ENCYONEMA. ;i rather broad hyal
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w u bo o w a S _o C o _rt o s rt a
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i54 MASTOGLOIA. A. Valves with stri
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'& STIGMOPHORA. B. Valve having hya
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158 U-'Ji Fig. 30. Stauroneis Phcen
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160 STAUR0NE1S. tabular, showing th
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162 NAVICULA. GENUS 7. NAVICULA BOR
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164 Valves not 1 inear. NAVICULA. c
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1 65 NAVICULA. Valve linear-ellipti
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i 68 NAVICULA. **Minores. Frustules
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170 NAVICULA. N. borealis Ehr. (Ver
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172 NAVICULA. space round the raphe
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174 NAVICULA. 2. Valves bi-undulate
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ij6 '] no NAVICULA. b. STRLE VERY D
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178 NAVICULA. var. Meniscus Schum.
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l8o NAVICULA. Valve broadly lanceol
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1 82 NAVICULA. Differs from the pre
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184 NAVICULA. cave sides, showing a
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1 86 NAVICULA. the apex of the valv
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1 88 NAVICULA. We give the descript
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TQO NAVICULA. N. compressicauda Ad.
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192 A . NAVICULA. Valve furnished w
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194 NAVICULA. N. Weissflogii A. Sch
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196 NAVICULA. raphe; 6 or 7 striae
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198 NAVICULA. Much more frequently
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20D NAVICULA. N. notabilis Grev. (T
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202 NAVICULA. are less marked, and
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204 pi. NAVICULA. N. praetexta Ehr.
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206 NAVICULA. My group, Aspera, cor
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208 NAVICULA. N. integra W. Sm. (S.
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210 NAVICULA. N. elegans W.Sm. (S.B
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2T2 NAVIGULA. N. Scandinavica (Lag.
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2T4 NAVICULA. Valve very elongate,
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2l6 N.WICULA. N. fusoides Grun. (Ar
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21 8 NAVICULA. N. formosa Greg. (T.
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2 20 NAVICULA. robust. Striae 16 or
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22 2 NAVICULA. XIX. Lineares. N. Li
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224 NAVICULA. N. Bacillum Ehr. (Mik
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226 f Valve with coarse striae simu
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228 NAVICULA. N. Falaisensis Grun.
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230 SCHIZONEMA. somewhat dilated ne
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232 SCH1Z0NEMA. Valve excessively s
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234 LIBELLUS. Caloneis Cleve. (rSor
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236 NKIDIUM. N. Hyalosira Cleve. (i
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23* Fig. 36. RHOICONEIS. we are dea
Page 268 and 269:
240 VANHEURCKIA. I. Stria quite par
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242 AMPHIPLEURA. dots, arranged in
Page 272 and 273:
!44 BREBISSONIA. GENUS 16. BREBISSO
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246 SCOLIOPLEURA. GENUS 19. SCOLIOP
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248 Fig. 49. Donkinia recta. DONKIN
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Striae decussate (cutting one anoth
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252 PLEUROSIGMA. of points sometime
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254 PLEUROSIGMA. PI. acutum Norm. (
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256 PLEUROSIGMA. aa. LONGITUDINAL A
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258 PLEUROSIGMA. var. curvula Grun.
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260 RHOICOSIGMA. GENUS 23. RHOICOSI
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262 AMPHIPRORA. A. alata Klltz. (Ba
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264 TROPIDONEIS. var. pusilla. (A.
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2 66 AURICULA. This singular form h
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2 68 GOMPHONEMA. A. minuta Cleve, (
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270 GOMPHONEMA. space. Median stria
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272 GOMPHONEMA. Median stride much
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274 GOMPHONEMA. Valve rather broadl
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276 ACHNANTHIDIUM. var. marinum. (G
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278 ACHNANTHKS. ANALYSIS OF SPECIES
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2 8o ACHNANTHES. A. parvula Kutz. B
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282 ACHNANTHES. in i c.d.m., and mo
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284 genus. ANORTHONEIS. Cleve unite
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286 COCCONEIS. GENUS 34. COCCONEIS
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288 COCCONEIS. 4 or 5 longitudinal
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29O COCCONEIS. C. Pelta Ad. Schm. (
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292 PSEUDO-RAPHIDIEjE. SUB-FAMILY I
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294 Fig. 66. Epithemia turgida. Two
Page 324 and 325:
296 EPITHEMIA. E. gibba Kutz. (Baa,
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298 EUNOTIA. central nodule (which
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300 EUNOTIA. E. major (W. Sm.) Rabe
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3
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304 EUNOTIA. var. subarcuata (Naeg.
Page 334 and 335:
3o6 ACTINELLA. C. Arcus Kiitz. (Baa
Page 336 and 337:
3 o8 Strias extending throughout ne
Page 338 and 339:
, I0 S. Vaucherise Kutz. ! SYNEDRA.
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312 SYNEDRA Valve narrowly lanceola
Page 342 and 343:
314 SYNKDRA. A A. STRL MARGINAL, OR
Page 344 and 345:
3*6 SYNEDRA. S. fulgens (Kutz.) W.
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3*8 CAMPYLOSTYLUS. Alongside of the
Page 348 and 349:
3 2 PSEUDO-SYNEDRA. HI Fig. 76. Pse
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322 THALASSIOTHRIX. \ \ ! scattered
Page 352 and 353:
3 2 4 FRAGILARIA. F. undata W. Sm.
Page 354 and 355:
326 FRAGILARIA. var. binodis Grun.
Page 356 and 357:
328 Valves with apices similar. Val
Page 358 and 359:
33 All beads , of equal size. RAPHO
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33 2 CRUNOVIELLA. Sceptroneis Caduc
Page 362 and 363:
334 I GLYPHODESMIS. Tribe x. Plagio
Page 364 and 365:
336 DIMEREGRAMMA. ANALYSIS OF SPECI
Page 366 and 367:
338 PLAGIOGRAMMA. P. Gregorianum Gr
Page 368 and 369:
34< GEPHYRIA. Fig. 97. Entopyla inc
Page 370 and 371:
342 LICMOPHORA. Licmophora are foun
Page 372 and 373:
3 44 LICMOPHORA. II. Frustules prof
Page 374 and 375:
346 CLIMACOSPHENIA. Four species of
Page 376 and 377:
348 DIATOMA. var. constrictum. (H.V
Page 378 and 379:
350 DIATOMA. Very narrow, delicate,
Page 380 and 381:
352 DENTICULA. D. tenuis Klitz. (Ba
Page 382 and 383:
354 GRAMMATOPHORA. ANALYSIS OF SPEC
Page 384 and 385:
356 Fig. 106. Tabellaria fenestrata
Page 386 and 387:
35 TABELLARIA. B. Entetracyclus (Ra
Page 388 and 389:
36 RHABDONEMA. GENUS 71. RHABDONEMA
Page 390 and 391:
362 STRIATELLA. GENUS 73. STRIATELL
Page 392 and 393:
3 6 4 Fig. 116. Lamella oculata. LA
Page 394 and 395:
3 66 HYDROSILICON. III I '1/ GENUS
Page 396 and 397:
3 68 SURIRELLA. GENUS 78. SURIRELLA
Page 398 and 399:
370 SURIRELLA. var. amphioxys. (S.
Page 400 and 401:
372 SURIRELLA. S. Gemma Ehr. (Abh.,
Page 402 and 403:
374 SURIRELLA. II. Valves twisted,
Page 404 and 405:
376 CAMPYLODISCUS. Analysis of the
Page 406 and 407:
378 CAMPYLODISCUS. Valve large, orb
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3 8o HANTZSCHIA. Valve suborbicular
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3 82 NITZSCH1A. H. marina (Donkin)
Page 412 and 413:
384 TRYBUONELLA. Group i. Tryblione
Page 414 and 415:
386 NITZSCHIA. Valve narrowly linea
Page 416 and 417:
3^8 NITZSCHIA. N. acuminata (W. Sm.
Page 418 and 419:
39 NITZSCHIA. transversely elongate
Page 420 and 421:
392 Group NITZSCHIA. 12. Bacillaria
Page 422 and 423:
394 NITZSCHIA. Differs from the pre
Page 424 and 425:
396 N. Brebissonii W. Sm. ! NITZSCH
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398 NITZSCHIA. Shorter, narrower, a
Page 428 and 429:
400 NITZSCHIA. var. recta (A 7 , re
Page 430 and 431:
4
Page 432 and 433:
44 Fig. 126. Nitzschia longissima (
Page 434 and 435:
406 NITZSCHIA. var. incurva Grun. (
Page 436 and 437:
4o8 GOMPHONITZSCHIA. N. (H.) subcoh
Page 438 and 439:
4io CRYPTO-RAPHIDIE/E. SUB-FAMILY I
Page 440 and 441:
412 Frustules consisting of numerou
Page 442 and 443:
414 here, RHIZOSOLENIA. Mr. Peragal
Page 444 and 445:
416 DACTYLIOSOLEN. R. alata Brightw
Page 446 and 447:
4i8 I.AUDF.RIA GENUS 87. LAUDERIA C
Page 448 and 449:
420 GENUS 88. Fig. 138. At they a d
Page 450 and 451:
422 CH/ETOCEROS. Valve elliptic, ha
Page 452 and 453:
4^4 DITYLUM. GENUS 90. DITYLUM BAIL
Page 454 and 455:
426 Fig. 143. Pyrgodiscus armatus.
Page 456 and 457:
428 GONIOTHECIUM. GENUS 95. GONIOTH
Page 458 and 459:
43 PYXILLA. GENUS 96. PYXILLA (GREV
Page 460 and 461:
432 SYNDETOCYSTIS. GENUS 100. SYNDE
Page 462 and 463:
434 STEPHANOPYXIS. at the acute api
Page 464 and 465:
43 6 THALASSIOSIRA. var. delicatula
Page 466 and 467:
433 MELOSIRA. Fig. 164. Pantocsekia
Page 468 and 469:
4+ MELOSIRA. ANALYSIS OF SPECIES. I
Page 470 and 471:
442 MELOSIRA. M. Jurgensii Ag. (Sys
Page 472 and 473:
444 MELOSIRA. beads are, in error,
Page 474 and 475:
446 I CYCLOTELLA. ANALYSIS OF SPECI
Page 476 and 477:
448 DRURIDGEA. The genus Podosira o
Page 478 and 479:
f ; Valves unlike d > f Tribe XXI.
Page 480 and 481:
45 2 TERPSINOE. Fig. 175^. Isthmia
Page 482 and 483:
454 ANAULUS. Three forms inhabiting
Page 484 and 485:
45 6 HEM1AULUS. The figures in the
Page 486 and 487:
453 GRAYA. Ploiaria petasiformis Pa
Page 488 and 489:
460 l'.AXTERIA. Rutilariopsis recen
Page 490 and 491:
462 CLIMACODIUM. GENUS 128. CLIMACO
Page 492 and 493:
4 6 4 BELLEROCHEA. StreptOtheca Tam
Page 494 and 495:
466 BIDUULPHIA. IV. Eubiddulphie/E.
Page 496 and 497:
468 a. Girdle view. a. BIDDULPHIA.
Page 498 and 499:
470 f Valves furnished with costae
Page 500 and 501:
472 BIDDULPHIA. Valve elliptic, lan
Page 502 and 503:
474 BIDDULPHIA. formed of rather co
Page 504 and 505:
476 ENTOGONIA. Valve triangular, wi
Page 506 and 507:
47 8 ODONTOTROPIS. GENUS 136. ODONT
Page 508 and 509:
480 HUTTONIA. Fig. 213. Huttonia al
Page 510 and 511:
4 g 2 AULISCUS. GENUS 1M.-AULISCUS
Page 512 and 513:
4 8 4 MONOPSIS. Valves elliptic or
Page 514 and 515:
4 86 BERGONIA. GENUS 147. BERGONIA
Page 516 and 517:
488 AULACODISCUS. A large number of
Page 518 and 519:
49 ROPERIA. GENUS 151. ROPERIA GRUN
Page 520 and 521:
492 Fig. 230. Perithyra denaria, PE
Page 522 and 523:
494 ' Fig; 233. A. ( Debya) undulat
Page 524 and 525:
49 6 ACTINOPTYCHUS. Symbolophora Eh
Page 526 and 527:
49 3 ANTHODISCUS. GENUS 160. ANTHOD
Page 528 and 529:
5 ASTEROLAMPREÊ. W. insignis Panl.
Page 530 and 531:
o2 CLADOGRAMMA. GENUS 163. CLADOGRA
Page 532 and 533:
504 ASTEROLAMPRA. GENUS 166. ASTERO
Page 534 and 535:
So6 GENUS 170. Fig. 254. b Stictodi
Page 536 and 537:
508 A single species : Radiopalma R
Page 538 and 539:
5i B. Valves linear, rcniform, or c
Page 540 and 541:
5*2 XANTHIOPYXIS. GENUS 175. XANTHI
Page 542 and 543:
5*4 15RIGHTWELUA. Sect. II. Brightw
Page 544 and 545:
5^ PORODISCUS. GENUS 180. PORODISCU
Page 546 and 547:
5*8 P.RUNIA. rising in order to ben
Page 548 and 549:
520 STEPHANODISCUS. Sect. IV. Hyali
Page 550 and 551:
522 ACTINOCYCLUS. GENUS 186. ACTINO
Page 552 and 553:
524 ACTINOCYCLUS. at the centre of
Page 554 and 555:
526 COSCINODISCUS. works by Mr. Gru
Page 556 and 557:
528 COSCINODISCUS. although the rea
Page 558 and 559:
53 COSCINODISCUS. C. nobilis Grun.
Page 560 and 561:
532 COSCINODISCUS. C. decipiens Gru
Page 562 and 563:
534 COSCINODISCUS. and notes, as we
Page 564 and 565:
536 1 Hi H JANISCHIA. p Fig. 2S1. H
Page 566 and 567:
538 EUODIA. Section VI. Hemidisceê
Page 568 and 569:
54 VAN HEURCKIELLA. Genera dubia v.
Page 570 and 571:
542 Fig. 291. Heribaudia ternaria.
Page 572 and 573:
544 angusta Greg. (Amphora) 130, pi
Page 574 and 575:
54^ corona Ehr. (Systephania) 435 c
Page 576 and 577:
548 Formosa? (Navicula) 164, 217, 2
Page 578 and 579:
55 lanceolatum Donk. (Pleurosigma)
Page 580 and 581:
55- var. gracilis 127, pi. 1, f. 16
Page 582 and 583:
554 rupicola Gr. ( Cymbclla) 144 Ru
Page 584 and 585:
556 Tryblionella (W. Sm.) Grunow. 3
Page 586:
558 Terms Described. Acuminate 86,
Page 591:
^^^^M^â-^^Mi^Âa^ru^JtC&î^tey y /
Page 595:
SSfflZrffcmt* vim -Sua i&L6tafa)rui
Page 599:
' /A \ JT?.//.*Zssz fy/z^&Ur&Jûauy
Page 603:
îZ&jmidjVui* a/uat^^ca^w#sSst/Jr/a
Page 607:
__' . -ff{'lu/
Page 611:
^^^^nu/'a-fyc^^^t^^taîî/î^^f/yû
Page 615:
__ . .' /f?/!,uâw&u
Page 619:
J MALVAUX- ' ' j, ' Sfr /7 u/anZ^Lx
Page 623:
' __/ '/{'tut/*'/. "flMel6&2&!ul&me
Page 627:
J^Z/fontefai zâ^/Âa^n^^^0f4yu^ JV
Page 631:
Jz^S?^fc*As/û>i^MM^^ca^ru^JtiiiM^/
Page 635:
J M*LV*VA. PHDTQ7YP
Page 641:
PLATE XIV. Fig. 593. Oampylodiscus
Page 645:
PLATE XV. Tig. 438b. Hantzsohia amp
Page 649:
Fig. PLATE XVI.
Page 653:
PLATE XVIL Fig. 548. Nitzschia lanc
Page 657:
PLATE XVIII. Fig. 603. Chaetoceros
Page 661:
PLATE XIX. iig. 614. Melosira Roese
Page 665:
Fig. PLATE XX.
Page 669:
PLATE XXI. Fig. 638. Biddulphia tur
Page 673:
PLATE XXII. Fig. 64-8. Actinoptychu
Page 677:
PLATE XXIII. Fig. 658. Actinocyclus
Page 681:
PLATE XXIV. Fig. 670. Amphora robus
Page 685:
PLATE XXV. Fig. 695. Cymbella amphi
Page 689:
Fig. PLATE XXVI.
Page 693:
PLATE XXVII. Fig. 755. Navicula Hen
Page 697:
Fig. PLATE XXVIII.
Page 701:
PLATE XXIX. Fig. 803. Amphiprora ob
Page 705:
PLATE XXX. g. 825. Epithemia gibber
Page 709:
PLATE XXXI. Fig 350. Licmophora Ji.
Page 713:
PLATE XXXII. Fig. 868. Campylodiscu
Page 717:
PLATE XXXIII. Fig. 877. Nitzschia v
Page 721:
PLATE XXXIV. Fig. 891. Isthmia nerv
Page 725:
PLATE XXXV. Fig. 906. Amphora Pusio
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