« 

 554 [Assembly 



It is estimated that the human race, a thousand million of men, j 



consume annually four million four hundred and eighty thousand \ 



pounds of tobacco, which, at eight hundred pounds per acre, 

 would require five and a half millions of acres of rich land to be ] 



kept constantly under tobacco cultivation. '' 



Dr. Water bury — If we compare together some of the leading i 



articles used by animals for food, we shall find that they differ ,] 



after the following fashion in the proximate elements of which \ 



they are composed. In the following table* the first column ex- 

 presses the per centage of albumen, casei'^.e and gluten, what 

 Leibig calls the " plastic elements of nutrition" fuund in these 

 substances ; the second column the starch, gummy and fatty mat- 

 ters devoted to the support of respiration and the production of \ 

 heat, while the third column expresses the ash or bone earth. j 



The quantities refer to the substances dry. i 



Motion. Heat. Bones. 



Blood and Lactic acid Plant ash 



muscle. and fat.j and bone 



earth, j 



Wheat, per cent, 22.75 73.23 3.02 ■ 



" , 29.00 77.29 2.71 



" .., 19.50 77.65 2.85 ] 



" 16.25 83.00 2.75 i 



« 11.20 86.68 2.12 I 



Oats, " 14.39 82.36 3.25 j 



Barley, " 13.96 82.94 3.10 ; 



Rye, " 13.50 83.99 2.60 | 



Maize, « 12.50 86.25 1.25 



Rice, « 7.05 92.10 .90 



Potatoel " ., 5.77J 



Carrot " 4.69| .60 



Derived, as these tables have been, from an exclusive European 

 source, their correspondence with the relative value put on these 

 substances by trade as articles of feed in this country is certainly 

 very striking. From them it results that a pound of root crop is worth 



• Gathered out of Pereira. 



I Vegetable fibre has been included also in this column. 



t Some specimens of potatoe are said to rank as high as 10 per cent in proteine elements. 



