BULLETIN OF THE BUSSEY INSTITUTION. 9 
Of matters valuable as manure the specimen contained : — 
Phosphoric acid soluble in water . a MBLY 
*: “insoluble “ . ; F 7.86 
“ oars Totals) scree 12.677 
Total nitrogen, 1.25% — ; emmipnis, oe as i. e. nitrogen . 0.15% 
nitrogen: not in form of ammonia 1.10 
i 25S 
There was sand, &c., insoluble in acid, to the amount of . ’ . 354% 
II. Wilson’s Superphosphate, bought March, 1872, of J. Breck and 
Son, Boston. 
Moisture. : : , rie OE W. 
_ Volatile matter (beside moisture). 27,21 
Ash . ‘ Hc). ° . . 65.07 
100.00 
Of matters valuable as manure the specimen contained :— 
Soluble phosphoric acid : 2 P 1 BTBY 
Insoluble “ ) ° 2 : 7.60 
Total & oe : : : ‘ 11.857 
‘Total nitrogen, 0.69% = / ammonia, 0.33%, i. e. nitrogen 0.28% 
‘ 4 nitrogen not in form of ammonia 0.41 . 
———1 5 07 
There was sand, &c., to the amount of . é : ‘ ; ve os 3 ies 
_ III. Coe’s Superphosphate, bought April, 1871, of William L. 
Bradley, Boston. 
Moisture . , - P ; tt Gage 
Volatile matter (beside moisture). 35.14 
De | 5808 
100.00 
Of matters valuable as manure the specimen contained : — 
Soluble phosphoric acid nae gat See ak Laat we eae 
Insoluble 2 - ‘ : : ; 10.49 
Total ae fs : ; - gg rite 14.98% 
which presents itself for solution is that relating to the character of the fertilizers 
of the locality. The laboratory of the Bussey Institution has in its turn been 
forced to give some attention to this matter of detail. 
__ As now printed, the paper retains its original form. It has been altered only by 
the incorporation of a few determinations made since the presentation of the report, 
and some slight additions explanatory of the estimates of values, 
VOL. I. 2 
