342 BULLETIN OF THE BUSSEY INSTITUTION. 
. ° Mean of the 
Coarse Salt-hays: VI. VII. Vill. 3 Analyses. 
Wate 4 tie a6" ore 11.70 17.47 18 61 15.93 
Ash (free from C and CO,) . 9.84 9.56 11,81 10.41 
Albuminoids . ... « « 4.33 5.55 5.38 5.09 
Carbohydrates (including fat) 43.59 37.41 36.56 39.18 
Cellulose (free from ash) . . 30.54* 30.01 27.64 29.39 
100.00 100.00 100.00 100.00 
Dry organic matter. .. . 78.46 72.97 69.58 73.67 
Fat, &c. (ether extract) . . 2.29 2.26 2.49 2.35 
WGTOGUH 620s cs das ° 0.69 { 0.88 pe 0.83 
0.89 0.87 
CHNOG ASW are isle Mint ge lhe 9.84 9.56 11.81 10.41 
9. Black grass (Juncus bulbosus, variety Gerardi, or Bothnicus) from 
J. R. Brewer, Esq., Hingham. The specimen analyzed was obtained 
by picking out spears of black grass from the original sample of salt 
hay from which sample No. 2 (see above, page 340) had been taken. 
Since only those portions of the black grass to which seed-vessels 
were attached were easily recognizable, and since many of the stalks 
were broken, the sample analyzed consisted for the most part of the 
upper portions of stalks, together with very many seed-vessels, though 
no seeds were contained in them. 
10. Black grass from Marion, Mass., near mouth of Weweantitt 
River, crop of 1874. An excellent sample, “not wet in curing.” 
There were many seeds upon the stalks in the sample taken for 
analysis. 
Black Grass Hay: IX. xX. re oat aaie 
AVEUEI es 25 6. Peed ea Tak, 10.25 ° 8.71 
Ash (free fet C ae OOR 26 4.96 5.48 Be 
AUD IMUN OLS s <\eer pee 7.39 6.18 6.79 
Carbohydrates (including fat) 44.64 47.66 46.15 
Cellulose (free from ash) . . 35.90 30.43 33.16 
100.00 100.00 ~—- 100.00 
Dry organic matter . . . . 87.93 84.27 86.10 
Fat, &c. (ether extract) . . 2.09 2.51 2.30 
0.98 
PELCPONOIIN 2.14) ) tn deh cells ay 1.18 / 0. 20 1.05 
Griue BaD eke eee 4.90¢ 5.65—dS.87¢ 5.47 
* Mean of two determinations, viz., 30.14% and 80.93%. 
+t Sprengel (Erdmann’s “ Journal tech. und ek. Chemie,” 1829, 5. pp. 61, 295, 
and 1831, 10. 48) found much more ash (8.1% of the dried hay) in a sample of 
the variety of black grass from the sea-shore, “J. Bothnicus,” which is the 
more common form in this country, than in J. bulbosus, from an apparently 
