350 Cnurcu: THE BULB IN COOPERIA DRUMMONDII 
layer on each surface. The several rows of cells directly below the 
outer epidermis contain starch, while the cells below the inner epi- 
dermis do not. The starch-filled cells measure 59-158 uv in length 
and 59-69 » in width, with their greatest dimension running parallel 
to the longitudinal axis of the bulb. The vast majority of such 
cells average 158x59u. The cells between the cells containing 
starch and the accompanying cells contain raphides in the 
first seven or so scales, but rarely in the older scales. The 
amount of starch also is less in the older scales than in the more 
actively functioning portions of the bulb. There appear to be, 
however, sphaero-crystals stored in the older scales. There is 
noticeably less starch and fewer raphides in the scales immediately 

rae , 
: base bt 
Fic. 2. Fic. 3. 
Fic Diagram of Cooperia Drummondii as it would appear if the internodes 
devtaped I, lamina of a leaf; b, basal sheath; 0, leaf subtending flower; f, flower; 
n the lower part of the figure a central longitudinal cyon is represented, showing 
pincigake the relation of the basal sheath to the main axis; the relation of the 
flower and its subtending leaf to the main axis is problematic with the evidence at 
hand 
Fic. 3. Diagrammatic semi-transparency of the youngest portion of the bulb 
of Cooperia Drummondii: pm, the primordial area, below which are the primordia 
of the youngest or uth leaf; gree: older leaves are marked Int» In—2, and Ins; 
their respective bases, Bn1, ba—2 and : 
