328 KirkKwoop AND GIES: CHEMICAL STUDIES 
have been 788 grams, the percentages of ‘the parts were (calcu- 
lated by us) : 
Shell. Endosperm with Germ. Milk. 
28.17 per cent. 54.32 per cent. 17.51 per cent, 
These results, it will be observed, harmonize closely with the aver- 
ages of our own determinations. 
The data obtained by Bachofeu in this connection will be 
found in the table on page 335.* 
Composition or THE Mitx.—The milk was poured from the 
nut through an opening made in the “eye” of the fertile carpel 
(see page 350) with acork-borer. Extraneous matter could easily 
be kept out of the milk by this procedure and, besides, the fluid 
could be obtained when desired in a perfectly fresh, unevaporated 
condition, 
The milk was found to be faintly turbid and opalescent in each 
case, and always contained a few oil globules and occasionally 
crystalline matter. It was acid in reaction to litmus although, as 
shown by lacmoid, no free acid was present in the normal fluid. 
The reaction is due to acid phosphate. Both alkali and earthy 
phosphate are present. The latter can be precipitated, in part at 
least, on boiling. An abundant precipitate of phosphate is obtained 
when the milk is made alkaline. The average specific gravity, 
determined with the aid of a hydrometer, was, as already noted on 
page 327, 1,023 and 1,021. The average specific gravity of the 
mixed milk of 15 nuts not included in the table on that page was 
1,023. Of eight additional nuts not referred to there, and © 
amined at another time, the figures for the mixed milk were 
1,022. 
The milk reduces Fehling’s and Nylander’s solutions and it fer- 
ments. It contains some monosaccharide which, from the chat 
acters of the phenylosazone derivatives, appears to consist of 
either dextrose or galactose, probably of both. Disaccharide ™ 
the form of cane-sugar is also present in good quantity, a5 might 
be inferred from the sweet taste of the milk. 
aE 
* Results having some relation to these are given by Atwater: Report of = 
Storrs (Conn ) Agricultural Experiment Station, 123. 1899. Hammerbacher (14 fe 
wirtschaftlichen Versuchs-Stationen, etc., 18: 472. 1875) found that the cone 
of two nuts weighed 835.8 grams ; the milk, 303.95 grams. See also, pages 33* and 33 
