The Use of a Simple Microscope. 



15 



Fig. 9. — a. Paissian hemp. 6. Himalayan hemp. c. Italian hemp. 



Hemp. — The true hemp, Cannabis sativa, is well known ; and 

 Fig. 9 represents the microscopic appearance of three varieties : 

 the Russian, Himalayan, and Italian. They are not unlike flax, 

 except as to tlie transverse markings, which in hemp are usually 

 defective, and, when present, less decided. It is difficult to dis- 

 tinguish some fine samples of hemp from flax. 



ri„ 10 — Slum, Jitec Dunchec 



Jetee yields the Rajmahal bowstring-hemp, a fibre much 

 valued for its tenacity. 



