CHE REFERENCE LIBRARY - Pole Shift Survival Information

PROP2IG,4TION BY MEANS OF SEEDS AND SPORES 13
,~l sandy loam which is set inside a la,rger pot, the intermediate
space being filled with moss, to which, alone, the water
is applied. This device is illustrated in Fig. 3. The water
soaks through the walls of the inner pot and is supplied gradually
and constantly to the soil. Even in this case it is necessary
to prevent soaking the moss too heavily, especially with very
weak st~ls. \l’hen mtmy pots are required, they may be
plunged ill moss with the same effect. The soil should be only
\~ty~ sliglit ly moist,
iie\x‘r wet. Moisture
is sometimes
supplied b!T setting
thy st~rtl-pot iii a
shallow
n , . ‘ qtt 1* 1 , or “I;t”:ZZ\.
(. ;:,f
sliHic+nt to place it
in t IIt% Imik&l ;lt mospl1W
Of ;I l’l’OI”‘- Frci. 3. lhulh wed-pot, with mm between the
also :L lhbc*li of wooc1 011 wtlictk crrt,nin
gat.i tlg-bc ,s. I largtb ~:1;~31f3’~~$ ),(, y,,wII
* . e
but weak sc~ls I~MJ
be laid on tllch surface of the soil in a half-filled pot, covered
with thin muslin and co~erec.1 again with loose and damp loam.
I’very day the IJOt is inspected, the covering taken off and
frt3h soil adrlcd. it modification of this plan, for sinall seeds,
is made by plx(~ing the seeds between t.wo layers of thin muslin
i111Cl l:t+g them ill damp loam, which is frequently renewed
to avoid the tMremt9 that would result from watering or from
allowing the soil t 0 become (lry . In these last operations,
no water is applied to the seed, and they constitute one of
the mo:;t satisfattorv methods of dealing with seeds of low
viability. ‘I’hty nrAssentially the methods long ago used by
Thomas Andrew Knight, who laid such seeds between two sods
cut from an old and dry pasture.
&Seeds of orchids arid certain other plants are sometimes