the rotifera

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Contemplatio Naturae prsegustus est voluptatis caelestis, constans animi gaudium, perfectique ejus solatii initium, summusqne felicitatis humanae apex. Cum Aninia hujus particeps fuerit, ex gravi quasi sopore excitata, in luce ambulat, sui ipsius obliviscens, in caelesti, ut ita dicam, terra, inque terrestri ccelo.—J. BASTER. Inest in explicatione Naturae, insatiabilis quaedam e cognoscendis rebus Voluptas, in qua una, confectis rebus necessariis, vacui negotiis, honeste ac liberaliter possunius vivere.—CICERO, De Finibus, lib. iv. cap. 5. http://rcin.org.pl
CHAPTER I. INTIiODUCTION. ON tlie Somersetshire side of the Avon, and not far from Clifton, is a little combe, at the bottom of which lies an old fish-pond. Its slopes are covered with plantations of beech and fir, so as to shelter the pond on three sides, and yet leave it open to the soft south-western breezes, and to the afternoon sun. At the head of the combe wells up a clear spring, which sends a thread of water, trickling through a bed of osiers, into the upper end of the pond. A stout stone wall has been drawn across the combe from side to side, so as to dam up the stream ; and there is a gap in one corner, through which the overflow finds its way, in a miniature cascade, down into the lower plantation. The pond's smooth surface is prettily diapered with the green leaves of many a water-plant, and with the sharp images of three famous beeches growing close to its edge: but to a naturalist's eye the old wall is the more charming object. Time has crumbled away the mortar near the water's edge, and made a thousand nooks and crannies ; which, densely clothed with algfe, are the haunts of myriads of living creatures. If we approach the pond by the gamekeeper's path from the cottage above, we shall pass through the plantation, and come unseen right on to the corner of the wall; so that one quiet step will enable us to see at a glance its whole surface, without disturbing any living thing that may be there. Far off at the upper end a water hen is leading her little brood among the willows ; on the fallen trunk of an old beech, lying half-way across the pond, a vole is sitting erect, rubbing his right ear ; and the splash of a beech husk just at our feet tells of a squirrel, who is dining somewhere in the leafy crown above us. But see! the water rat has spied us out, and is making straight for his hole in the bank, while the ripple above him is the only thing that tells of his silent flight. The water hen has long ago got under cover, and the squirrel drops no more husks. It is a true ' Silent Pool,' and without a sign of life. But if, retaining sense and sight, we could shrink into living atoms and plunge under the water, of what a world of wonders should we then form part! We should find this fairy kingdom peopled with the strangest creatures :—creatures that swim with their hair, that have ruby eyes blazing deep in their necks, with telescopic limbs that now are withdrawn wholly within their bodies and now stretched out to many times their own length. Here are some riding at anchor, moored by delicate threads spun out from their toes ; and there are others flashing by in glass armour, bristling with sharp spikes or ornamented with bosses and flowing curves; while, fastened to a green stem, is an animal convolvulus that by some invisible power draws a never-ceasing stream of victims into its gaping cup, and tears them to death with hooked jaws deep down within its body. Close by it, on the same stem, is something that looks like a filmy lieart's-ease. A curious wlieelwork runs round its four outspread petals; and a chain of minute things, living and dead, is winding in and out of their curves into a gulf at the back of the B 2 http://rcin.org.pl
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Page 7 and 8: THE ROTIFERA; OR WHEEL-ANIMALCULES.
Page 9 and 10: THE EiOTIPEEA. YOILUME I. http://rc
Page 11 and 12: THE BOTIFEBA; OR WHEEL-ANIMALCULES,
Page 13 and 14: PREFACE. NEARLY fifty years have pa
Page 15 and 16: CONTENTS OF T H E F I K S T VOLUME.
Page 17: THE ROTIFEBA. CHAPTER I. B http://r
Page 21 and 22: animal, very suitable for the purpo
Page 23 and 24: the mastax ; and there is a posteri
Page 25 and 26: more effective tlian this hydrostat
Page 27 and 28: coitus, but Mr. Gosse had this good
Page 29 and 30: CHAPTER II. THE HISTORY OF THE LITE
Page 31 and 32: CHAPTER II. THE HISTORY OF THE LITE
Page 33 and 34: (i) how the Rotiferon, when drawn u
Page 35 and 36: Tlia book, published in 1718, consi
Page 37 and 38: His criticisms are shrewd and often
Page 39 and 40: CHAPTER III. ON THE CLASSIFICATION
Page 41 and 42: CHAPTER III. ON THE CLASSIFICATION
Page 43 and 44: (b) The second form is a simple seg
Page 45 and 46: 4. Incudate (fig. 32). Mallei evane
Page 47 and 48: Fam. 7. Synchatada (PI. C. fig. G).
Page 49 and 50: CHAPTER IV. ON THE HAUNTS AND HABIT
Page 51 and 52: CHAPTER IV. ON THE HAUNTS AND HABIT
Page 53 and 54: tremula, are very different. The fo
Page 55 and 56: If the Rotifer hunter can rise to a
Page 57 and 58: CHAPTER V. FLOSCULARIAM. http://rci
Page 59 and 60: CHAPTER V. Order I. RHIZOTA. Fixed
Page 61 and 62: im of the corona. Owing to their gr
Page 63 and 64: on the dorsal surface. A partial se
Page 65 and 66: the young reared from its eggs, tho
Page 67 and 68: sented to him so that its upper and
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counted 1 in one tube. Tliis beauti
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The peculiarity of a second fringe
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that it looks like that of an QZcis
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duct wliicli divides into two later
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setae are far longer than they appe
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No male has as yet been recorded, b
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CHAPTER VI. MELICERTAM. a http://rc
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CHAPTER VI. Family II. MELICERTADiE
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are two moderate-sized gastric glan
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grows in size from tlie addition of
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Tubicolaria Naias . . . . Pritchard
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(fig. le); and below it, at right-a
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Mr. .Tatem [loc. cit.) described an
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The gradual changes of form in the
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[This very striking species I found
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(E. BRACHIATUS, Hudson, Sp. 110V. (
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forms a rectangular bundle that is
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M. ALBOFLAVICANS., Ehrcnbcrg. (PI.
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Genus CONOCHILUS, Ehrenberg. GEN. C
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surface, down to the cloaca. The vi
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CHAPTER VII. BDELLOIDA. http://rcin
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CHAPTER VII. Order II. BDELLOIBA. S
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All tlie Eotifera seem to possess t
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is difficult to suggest how this is
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ventricose, and marked more distinc
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Genus ROTIFER, Schrank. GEN. CH. Ey
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R. TARDUS, Ehrenberg. (PL X. fig. 1
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This species I have met with on sev
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Genus CALLIDINA, Ehrenberg. GEN. CH
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a yellowish-green cellular mass, a
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vesicle was also plainly visible :
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CHAPTEK VIII. PLOIMA (IL-LORICATA).
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CHAPTER VIII. Order III. PLOIMA. Sw
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ventral surface. Dr. Grenadier says
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inwards at the ventral surface, to
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A. PRIODONTA, Gosse. (Pl. XII. fig.
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Genus SYNCHCETA. GEN. CH. Form usua
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lobes are brought forward, and then
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THE ROTIFERA. VOLUME II. http://rci
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THE ROTIFERA; OR WHEEL-ANIMALCULES
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CONTENTS OF T H E S E C O N D V O L
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CHAPTER IX. PLOiMA IL-LORIC ATA—c
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CHAPTER IX. Family VIII. TRIARTHRAD
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expanding to a broad truncate margi
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intervals, and unite with the broad
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a tube, rich in Rotifera, sent me b
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as an organ of touch. The inner cil
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ventral side of the nervous ganglio
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Genus ALBEltTIA, Dujardin. [GEN. CH
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otatory organs to be wanting. Yet,
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whom I have received many specimens
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developed, and opaque with chalk de
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N. PILARIUS, Gosse, sp. nov. (PL XV
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sensibly at three-fourths from the
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I first found this species in vario
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senta and Euchlanis deflexa ; these
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" tag." From eacli toe runs up a th
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dark green, very slender, nearly st
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ant me in placing it in this genua.
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the viscera. 1 Its manners are live
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thin and blade-like, straight but s
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F. FORFICULA, Ehrenberg. (PI. XX. f
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This species is much like the prece
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a species of Euplotes, and a few of
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certainly right in distinguishing t
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(" 20 JUL 88 - i NOTOMMATAD^E. \+ 4
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the slender fore parts were retract
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I am not quite clear whether I ough
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lip is retracted, close against eac
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CHAPTER X. PLOIMA http://rcin.org.p
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CHAPTER X. Sub-Order LORICATA. Inte
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form. I did not discern any eye, bu
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a single vortex. Behind the head is
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R. TiGiiis, Milller. (PI. XX. fig.
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The hinder body is ventricose, grea
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This species has manifest affinity
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three genera is also very different
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Tliis Dinocharis was discovered by
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follow the arch of the dorsal. I de
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Mr. J. G. Tatem (" Quart. Journ. Mi
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D. HOODII, Gosse, sp. nov. (Pl. XXI
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D. TENUIOR, Gosse, sp. nov. (PI. XX
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long side (the dorsal) unsewn, whos
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much exceeded by the stout straight
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Of the two noble species for which
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To get a clear notion of tlie form
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Euchlanis dilatata . . . Moxon, Tra
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striate. An eye-spot wliicli appear
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with two equidistant incisions, at
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however, very thin and flexible, so
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OATH YPN AD.ZE. 99 frontal disk, an
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Family XVI. COLURID^E. [Body inclos
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and what appears a single, slender,
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Length. From hood to ends of lorica
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This charming species, though in te
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M. BRACTEA, Ehrenberg. Squamella br
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associate. The species is another o
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a distance of about one-third of th
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PTERODINAD.E. 115 the Firth of Tay.
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and thick muscular tube, very trans
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where the species is named rubens.)
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(Pl. XXX. fig. 9a). This is a littl
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cilia produce vortices, but not whe
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tlie lateral pair projects from the
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have an eye which has every appeara
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CHAPTER XI. SCIRTOPODA. http://rcin
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CHAPTER XI. Order IV. SCIRTOPODA. S
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chitinous lips, which may be seen c
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APPENDIX. THE VASCULAR SYSTEM. %* T
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ends, or are they closed ? Do they
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less obvious connection with the ex
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BIBLIOGRAPHY OF THE ROTIFERA. 141 5
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GENERAL INDEX. Vol. Page VoL e age
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http://rcin.org.pl
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http://rcin.org.pl
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T H E ;OTTFER'\ jKJ -W9* w ? - : .
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