Photiiiiiicrogrdf^lis of Botanital Studies. 



27. -Cotton plant " Gossypium," after eight days' germination. 



(C > Cotyled(jns, or seed-leaves. 



[, ) Pi-imary axis of plant (Stem). 



--1.1 I 



Hypocotyledonary stem. 



,/. Axis of root (ground level). 



r^j - 



id 



Secondary root. 

 Tap-root. 



28. — Cotton plant " Gossypium," after three weeks' germination. 



a First true leaves. 



h The true stem. 

 c The cotyledons. 

 d Primary axis. 



(' Secondary roots with root 

 hairs. 



