H. C. Bradley and M. 8. Nichols 527, 
nitric acid, washed in distilled water several times, and then 
finally in alcohol, out of which they were wiped dry when used. 
Into each of the ten tubes was placed the following charge: 
PP Orpesitiy SPate (oy. Fido). Ak ae ie ee ee Pou. 2.0 
MG rare ter UTE Mins coat ees a ge « 5. Soa eek ES ee rays She oiats 3 0,92 
mbes cr. CONCEDLTATCT fic...g. hc ee tee eas ect 5.0 
Weighed cover-slip and nraterial. 
The digestion was continued for 15 minutes after the liquid 
had become colorless. In practically all the material digested, 
there was noticed a small quantity of material which digested 
with difficulty. After the digest had cooled somewhat it was 
diluted with water, made alkaline with sodium hydroxide, and 
TABLE I. 
DLA ahi en dry Dry bacteria. Nees of Nitrogen. 
gm. gm. gm. per tome 
0.080280 0.004655 0.000370 7.9 
0.081060 0.004670 0.000390 8.3 
0.076380 0.005730 0.000485 8.5 
0.076925 0.007095 0.000575 8.1 
0.085820 0.003360 0.000290 8.6 
0.070600 0.005420 0.000440 es 
0.085050 0.007300 0.000581 8.0 
0.058450 0.004040 0.000357 8.8 
0.056470 0.002880 0.000245 8.9 
0.079020 0.004810 0.000413 8.7 
0.073330 0.001485 0.000120 8.4 
0.080460 0.002575 0.000250 OF 7E7 
0.097390 0.003390 0.000291 8.6 
0.089075 0.001350 0.000154 iV4* 
0.065480 0.006170 0.000470 7.6 
0.068180 0.004625 0.000490 10257 
* On account of the great variance from the average it seems Boe 
sible to omit these results from the average. 
“ 
