THE VOLATILE PART OF PLANTS. 109 
AVERAGE QUANTITY OF ALBUMINOIDS IN VARIOUS VEGETABLE PRODUCTS. 
per cent. 
Maize fodder, green.......... side Bia Gee RelA 1.2 
Beet tops DD a acatica muta ae iineknas 1.9 
Carrot tops oy ciaee au eee ae Kee BD 
Meadow grass “oo... ee ee eee eee e eee 31 
Red clover Me adwaltewians eee a veieiels wee 3.7 
White clover “kei ec cece cece ecee eee 4.0 
Turnips, fresh. .........cccseceecececen see 1.0 
Carrots: 8 casts ia saaasemesadeseeaciea 13 
Potatoes: (“ase susssiewsis canaccens - 2.0 
Corn cobs, air-dry......... biarete demote apes 
Straw of summer grain, air-dry....... woe 2.6 
Straw of winter es Pe pa eerie «-. 3.0 
Pea straw Me aeiatats seve 08 
Bean straw Mo ost -10.2 
Meadow hay Et ag wee 85 
Red clover hay Be Oo Sialoia dine aes 13.4 
White clover hay Hee daornansteretd 3 14.9 
Buckwheat kernel BS Sia eta eee 78 
‘Barley ee Me: saiveielidpnaietsies 10.0 
Maize a Rb x acareie sities 10.7 
Rye “ Fe | Jeceisio' sig slererssoia 11.0 
Oat sf SS: Sg exes es 12.0 
Wheat, ee ES pd ticnadend 18.2 
Péa cf CO" aaa eeweeaion 22.4 
Bean ae Oe accel eiaerdvaideare 241 
Lupine se S| os eaepeaieets 34.5 
APPENDIX TO §4. 
CHLOROPHYLL : TANNIN : ALKALOIDS. 
_ Before dismissing the subject of the Proximate Elements of plants, we 
must, notice several other substances of subordinate agricultural inter- 
est. Two of these, viz., Chlorophyll and Tannin, though not figuring in 
the analysis of agricultural plants, are nevertheless of almost universal 
occurrence in all forms of vegetation, though usually in very minute 
quantity. 
ChiorophyHl, i. ¢. leaf-green, is the name applied to the substance 
which occasions the green color in vegetation. It is found in all the sur- 
face of annual plants and of the annually renewed parts of perennial 
plants. It might readily be supposed that it constitutes a large portion 
of the leaves of vegetation, but the fact is quite otherwise. The green 
