712 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
f33.3 grm. Fr. =6.7533 grm. Wfr., gave 3.6755 grm. crude) 
I Ins. — 11.03% crude Ins. ^Av'ge 11.02% crude Ins. in Fr. 
| 33.3 grm. Fr. =6.7533 grm. Wfr., gave 3.6700 grm. crude f or 54.39% crude Ins. in Wfr. 
Insoluble \ Ins. = 11.01% crude Ins. J 
protein. ) 0.9245 grm. crude Ins. gave 0.0085 grm. water = 0.92% water) . 110/ nc OA(V T 
0.9245 0.0185 fat =-=2.02 fat (4.11% =95. »% pure Ins. to 
1 3.2720 0.0380 Ash =1.17 Ash ) crude Ins. 
1 54.39% crude Ins. = 52.15% pure Ins. iu Wfr. = 10.57% pure Ins. in Fr. 
Recapitulation of the analysis of flesh. 
Constituents. 
Protein = Nx 6.25. 
Albuminoids estimated 
by difference. 
In water- 
free sub- 
stance. 
In fresh 
substance. 
In water- 
free sub- 
stance. 
In fresh 
substance. 
Water 
Per cent. 
Per cent. 
79. 74 
18. 58 
0. 47 
1.37 
Per cent. 
Per cent. 
79. 74 
18. 42 
0. 47 
1. 37 
Protein 
Ether extract 
Ash 
Total 
91. 69 
2. 31 
6. 75 
90. 94 
2. 31 
6. 75 
100. 75 
100. 16 
inn oo 
100. 00 
Proximate ingredients directly determined. 
Constituents. 
In water- 
free sub- 
stance. 
In fresh 
substance. 
In fresh 
substance, 
calculated 
to lOOpr.ct. 
__ 
Per cent. 
Per cent. 
Per cent. 
Water __ 
79. 74 
80. 19 
Albumen coagulated in cold- 
water extract 
5. 87 
1. 19 
1.19 
Extractives, etc., not coagu- 
lated in cold-water extract . . 
13. 14 
, 2.66 
2. 68 
Gelatin in hot-water extract . 
16. 98 
3. 44 
3.46 
Insoluble protein 
52. 15 
10. 57 
16. 63 
Ether extract 
2. 31 
0. 47 
0. 47 
Ash 
6. 75 
1. 37 
1. 38 
Total 
97.20 
99.44 
100. 00 
Laboratory Number 247. 
Name : Skate, Raia sp. ? 
Locality: Long Island, Atlantic Ocean. 
Received : April 26, 1882, from Mr. E. G. Blackford. 
Description : Left lobe of body. 
Weighings in preparation for analysis. 
Grms. Lb. Oz. Pr. ct. 
Flesh 996. 0 2 3. 2 46. 32 
Refuse .• 1,097.0 2 6. 7 51.03 
Loss 57.0 2.0 2.65 
Total 2,150.0 4 11.9 100.00 
Analysis of flesh. 
Water(<&r\e& 
in 
hydrogen). 
Partial drying. — 100.00 grms. fresh substance, “ Fr.” = 20.99 grms. partially dried “Pd.’ 
= 20.99 % Pd. in Fr. 
Complete drying. — 1.0000 grm. Pd.= 0.8503 grm. Water-free, “Wfr.” =) 
85.03 % Wfr. in Pd. | 
Complete drying. — 0.9997 grm. Pd. = 0.8497 grm. Water- free, “ Wfr.” = ^Av’ge 85.02 % 
85.00 % Wfr. in Pd. f Wfr. in Pd. 
*Complete drying. — 1.0000 grm. Pd. = 0.504 grm. Water-free, “Wfr.” = | 
85.04 % Wfr. in Pd. J 
20.99 % Pd. in Fr. X 85.02 % Wfr. in Pd. = 17.85 % Wfr. in Fr., or 82.15 % Water in Fr. 
Nitrogen. 0.6000 grm. Pd. = 0.5101 grm. Wfr., gave 0.08301 grm. N. = 16.28 % N. 
0.6000 = 0.5101 0.08313 16.29 
* 0.6000 =0,5101 0.08316 16.30 
} Av’ge 16.29 % N.Wrf. 
£ or 2.91 % N. in Fr. 
