28 HOW CROPS FEED. 
Table. The weights are expressed in the gram and its 
fractions. 
es, 2 = 
purain S| Pao) Be een 
: TAUWON | hs) WS 2S 6 Bice Sy 
3| Kind of Plant. of (iss ss | SS | &s ‘$38 tls 
§ Experiment. $4 SR SS | FB Iss" S gs 
=| rixits ~ SO ee 
1} Dwarf bean. ........|2 months 1 0 780 | 1.87 |0.0349 0.0340 —0.0009 
AW OES EU eg, PU MOn SWE ee |2 2 10 | 0.377 | 0.54 0.0078 0.0067/\—0.0011 
Se CAD SoS ea oes. Pee 13 Be 1 | 0.530! 0.89 (0.0210 0.0189 —0.0021 
4) Vy wal Sapte et Siac 1 | 0.618 | 1.13 |0.0245 0.0226'—0.0019 
Bie TOM Ss hss, eee ae [Uy ri 4 | 0.139 | 0.44 |0.0031 0.0030 —0.0001 
liad) Diy ov 0c lercpe ey Sears ee a (14% ‘ 2 | 0.825 | 1.82 |0.0430'0.0483)-+-0.0003 
7 eer Be Ch Sosat 2 °F 6 | 2.202} 6.73 |0.1282)0.1246|—0.0036 
8 St) eer peace ayes aes . 7 weeks 2 | 0.600} 1.95 0.0349 0.0339 —0.0010 
9 Me, ashi sie acate cee eee 1 | 0.343 | 1 05 |0.0200 0.0204|+-0.0004 
10 peO Pe ee oe er 16 hg 2 | 0.686 | 1.53 |0.0399 0.0397|—0.0002 
11) Dwart, bedis 2: =... \2 months 1 | 0.792) 2.35 |0.0354 0.0360)-+-0.0006 
12 be SS. Wea brahmnwe thee 2% & 1 | 0.665 | 2.80 0. DR —0.0021 
i) CLEBBe ote ces ietdoee |344 ° 3 | 0.008 eS 
* bs ey See eee as manure 10 | 0.026 { 0.65 De tas 0.0000 
FAGAN 5652 got hoa 5 months 2 | 0.6271 » x ‘gn|__ 
‘ Pie Pee tee | eee asmanure | 8 | 2.5124 5.716 eit ie 3 0.0130 
14| Sum ciao RE he eRe Meee Wipes og tane ..../11.%20 | 30.11 |0.6135!0.5868|—0.0247 
While it must be admitted that the unavoidable errors of 
experiment are relatively large in working with such small 
quantities of material as Boussingault here employed, we 
cannot deny that the aggregate result of these trials is de- 
cisive against the assimilation of free nitrogen, since there 
was a loss of nitrogen in the 14 experiments, amounting 
to 4 per cent of the total contained in the seeds; while a 
gain was indicated in but 3 trials, and was but 0.18 per 
cent of the nitrogen concerned in them.—(Boussingault’s 
Agronomie, Chimie Agricole, et Physiologie, Tome I, 
pp- 1-64.) 
The Opposite Conclusions of Ville.—In the years 1849, 
50, °51, and 752, Georges Ville, at Grenelle, near Paris, 
experimented upon the question of the assimilability of free 
nitrogen. His method was similar to that first employed 
by Boussingault. The plants subjected to his trials were 
cress, lupins, colza, wheat, rye, maize, sun-flowers, and to- 
bacco. They were situated in a large octagonal cage 
mide of iron sashes, set with glass-plates. The air was 
