12 BULLETIN OF THE BUSSEY INSTITUTION. ~ 
IX. Russell Coe’s Superphosphate, obtained April, 1872, by John 
R. Brewer, Esq., of Hingham. 
Moisture ,. . ; ; 2 . 31.80% 
Volatile matter (beside moisture) . 27.26 
Ash . . e . . e . 40.94 
100.00 
Of matters valuable as manure the specimen contained : — 
Soluble phosphoric acid ‘ : 3 GBH 
Insoluble 4 :: . : : , 4.18 
Total 6s “6 e . . . 1 1.86% 
of { ammonia, 0.44%, i. e. nitrogen 0.36% 
nitrogen not in form of ammonia 0.59 
nee PA OGTE 
There was sand, &c., to the amount of . ; : oi gnu «) Rede 
Total nitrogen, 0.95 
X. Russell Coe’s Superphosphate, obtained June, 1872, from Whit- 
temore, Belcher, & Co., Boston. 
Moisture . : ° ; ; - 14.917 
Volatile matter (beside moisture) . 32.33 
Ash”. . ‘ , : : . 52.76 
100.00 
Of matters valuable as manure the specimen contained : — 
Soluble phosphoric acid pyr ee eee oO. g 
Insoluble 2 $f : : 5 ° 4.77 
Total 4 a ; 4 ‘ . 13.92% 
Total nitrogen, 1.01% = / ammonia, 0.42%, i. e. nitrogen 0.35% 
* nitrogen not in form of ammonia 0.66 - 
——— Le 
There was sand, &c., to the amount of . . ; : ‘ - 2.86 
. 
XI. Phosphatic Blood Guano, procured January, 1872, from the 
Manhattan Manufacturing and Fertilizmg Company of New York, by 
Mr. Gardner Brewer, of Boston. 
Moisture. ; - ° ; - 21.25% 
Volatile matter (beside moisture) . 43.88 
Ash . : : , . ‘ . 34.87 
100.00 
