CHE REFERENCE LIBRARY - Pole Shift Survival Information

PROPAGz4TION BY MEANS OF SEEDS AND SPORES 29
seeds, and is kept moist by capillary attraction; a glass cover (a).
The apparatus is seen set tq) in Fig. 14. This device works
on a principle long utilized in the
testing of seeds _ the capillary
power of earthenware and various
species of rock .-~-- and there are
many applkations of the idea in
yrwt ice. These seed-testers may FIG. 15. Sprouting-cup.
bv placed in an incubator or
other heating de\*iw, or they may be used in the greenhouse
or il living-room.
A bulletin (So. 35) of the Rhode Tsland Rsperinient Station
describes and illustrates a modification of the absorbing-block
idea (Fig. 15). Instead of a slab of stone or earthenware,
” sprouting cups ” are used. ‘L’l’licy are 3 inches in diameter
and 1 -i- inches high, including the cover, which is ventilated.
The bottom is solid and -$- inch thick. Each cup is placed in a
glass dish in which a constant supply of’ wter is kept.” These