jg^5.] in i^i^ Physical Sciences. <S? 



600 parts of the husk of the cucumber contain 90 Pf^ts of dry 



matter ;^he constituents of which bear a resemblance to those of 



'^'lo?PoSi-Lampadius has made comparative experiments on 

 four different varieties of potatoe ; namely, the Peruvian potatoe 

 broud^t from America by'^Humboldt, ^"d planted m Germany ; 

 the English potatoe; the onion potatoe;* and the Voichtland 

 potatoe.^ The^bllovvi'ng were the proportions of the different con- 

 stituents yielded by 100 lbs. of the respective sorts of potatoe. 



1. Peruvian Potatoe. 



lbs. 0^:. 



Starch Q 



Fibrous matter ^ ^^ 



Albumen ^g 



Extractive 



Water / 



100 



2. English Potatoe. 



lbs. oz. Jr. gr. 



Starch ^2 29 1 2 



Fibrous matter 6 20 2 4 



Albumen 22 ' 4 



Extractive J^'t - * 



Water 77 16 i ^8 



100 



3. Onion Potatoe. 



lbs. oz. dr. gr. 



search 18 24 



Fibrous matter 28 



Albumen ? 21 ? 2 



Ex^tractive ' ^ 



Water. ^0 1» - ^» 



100 



4. Voichtland Potatoe. 



lbs. oz. dr. gr. 



Stareh ^4 i 



F»/rous matter I 8 



Albumen 



l<\tractive 



j.xt acuve 74 8 54 



Water J_ 



100 



. I do not know the variety >vbich U known in Germany by the name of 

 Zmcb cl Karlofftt.-~T. 



