Schléssing has made a similar investigation 
and found that in the same plant the nicotine 
content varies from 0.79% when young to 
4.32% when fully matured. Most nicotine is 
found in the ribs and veins. . 
H. B. Cox (American Druggist V. 24, 1894, 
p. 95) investigated the nicotine contents of 
various manufactured tobaccos. These were 
not “proprietary tobaccos” but samples ob- 
tained from different sources at random. His 
results are given here: 
Nicotine Conrents or Dirrerent Topaccos 
Nicotine 
Syrian Tobacco leaf (a) .......... 612% 
American Chewing Leaf ........... 935% 
Syrian Tobacco Leaf (b) .......... 1.093% 
Chinese Tobacco Leaf ............. 1.902% 
Turkish Coarse Cut .............. 2.500% 
Golden Virginia (whole strips) ..... 2.501% 
Gold Flake Virginia .............. 2.501% 
Navy: Cat (Hen) soc vduieeasancs 2.530% 
Light Kentuckian ........ gaeeee 2.733% 
Navy COE (GREE) wacuex eas essa oo 3.64 % 
Best “Bird’s Eye” .............04. 3.981% 
Cut Cavendish (a) ...........004. 4.212% 
Beet. SWAG (2) ues cpuamowreseeaees 4.907% 
Cut Cevandish (b) s.casdeseeeens 4.970% 
Best Shig (0) Gccacacyosyueen haus 5.00 % 
