CHEMICAL COMPOSITION OF FOOD-FISHES. 
787 
Ether Ext. 
Ash. 
1.000 grm. Pd. =0.9905 grm. 'W'fr., gave 0.001 grin. Ext. =0.10% Ext 
1.000 =0.9905 0,001 =Q.10 
11 
Av’ge 0.10% Ext. in 
W fr. , or 0.00% Ext. 
in Fr. 
2.000 grm.Pd. = 1.981 grm. Wfr., gave 1.3950 grm. Ash. =70.38% Ash. C Av’ge 70.41% Ash. in 
" " or 2.81% Ash. 
2.000 
2.000 
=1.981 
- 1 . 
1.4115 
1.380 
71.21 
=69.63 
C Av’ge 7 
\ Wfr., 
t in Fr. 
Recapitulation of analysis. 
[Protein = N X 6.25. J 
Constituents. 
In water-free substance. 
In fresh substance. 
Flesh. 
Liquid. 
Flesh + 
liquid. 
Flesh. 
Liquid. 
Flesh + 
liquid, j 
Water 
P. ct. 
P. ct. 
P. ct. 
P. ct. 
78. 57 
P. ct. 
96. 02 
P. ct. 
86. 11 1 
Protein 
69. 37 
16. 37 
62.81 
14. 86 
0. 65 
8.71 ! 
Fat (ether ext.) 
Carbohydrates, etc. 
8.32 
0. 10 
7. 30 
1.78 
0. 00 
1. 01 
(by difference) 
10.67 
13. 12 
10. 97 
2.30 
6. 52 
1.54 
Ash 
11. 64 
70.41 
18. 92 
2.49 
2. 81 
2. 63 
100. 00 
100. 00 
100. 00 
100. 00 
100. 00 
100. 00 
Laboratory Number 50. 
Name : Lobster. 
Received : March 15, 1881, from E. G. Blackford, fish commissioner 
of the State of New York. 
Description : Two lobsters, entire, and evidently lately caught. 
Weighings in preparation for analysis. 
Parts. 
a. 
b. 
Average. 
Average. 
Per cent. 
Edible portions : 
Grms. 
Grms. 
Grms. 
Lbs. 
Oz. 
• 
Body 
118.5 
127.5 
123.0 

4.3 
12.46 
Claws 
152.5 
219. 5 
186.0 

6.5 
18. 86 
Tail 
138.0 
131.0 
134.5 
.... 
4.8 
13. 64 
Liquid 
54.4 
94.8 
74.6 
2.6 
7. 56 
Total edible 
463. 4 
572.8 
518.1 
1 
2.2 
52. 52 
Refuse 
367.8 
499.5 
433.7 

15.3 
43. 96 
Loss 
38.8 
30.7 
34.7 
1.3 
3. 52 
Total weight 
870.0 
1,103.0 
986.5 
2 
2.8 
100. 00 
Water, 
(dried in 
hydrogen). 
Nitrogen. 
Ether Ext. 
Ash. 
p 2 o 5 
so,. 
Analysis of flesh (edible portion ) . 
Partial drying. —113. 0 grm. fresh substance, “Fr.” = 18.3 grm. partially dried, “Pd.,”= 
16.19 % Pd. in Fr. 
Complete drying.— 1.6815 grm. Pd. = 1.6305 grm. Water free, “Wfr.’l 
= 96.97 % Wfr. in Pd. [Av’ge 96.96 % Wfr. 
Complete drying. — 1.6220 grm. Pd. = 1.5725 grm. Water free, l: Wfr.” f in Pd. 
= 96.95 % Wfr. in Pd. ) 
16.19 % Pd. in Fr. X 96.96 % Wfr. in Pd. = 15.70 % Wfr. in Fr., or 84.30 % Water in Fr. 
0.5995 grm. Pd. = 0.5812 grm. Wfr., gave 0.06890 grm -w — 1 1 bk <u -kt ) Av’ge 11.85 % N. in 
0.6015 =0.5832 0.06909 
0.6257 grm. Pd. = 0.6067 grm. Wfr., gaveO 
0.6345 0.6154 0 
•m TV 1 1 85 0 /„ TJ- ) Av ge 11.85 % FI. in 
’ _ iVat % > Wfr. or 1.86 % A T . 
— n -» 5 5 i n Fr. 
.0708grm. E xt.= n ; 67» iE ,t. j 
2.0535 grm. Pd. = 1.927 grm. Wfr., gave 0.200 grm. Ash = 10.38 % Ash 
) Av’ge 10.38 ° 0 Ash in 
. > W fr. or 1.63 % Ash 
in Fr. 
A lbum.cn 
in cold- 
water Ext. 
0.9115 grm. Pd. = 0.8553 grm. Wfr., gave 0.0182 grm. P 2 0 5 = 2.13 o 0 P 2 O s ? 2 ft lo°&?' P 5 0 
0.9130 =0.8567 0.0182 =2.13 t in p r ° rU,drf °^ U|i 
). 905 
0.9085 
5 33. 
^ 33. 
0.9050 grm. Pd. =0.8510 grm. Wfr., gave 0.0203 grm. SO* = 2.39 % S0 3 £ ^ * 
= 0.8525 
0.0203 
= 2.38 
.3 grm. Fr. = 5.2333 grm. Wfr., gave 0.1775 grm. Alb. = 
= 5.2333 0.2065 
S in Fr. 
— o yi o , a in ) Av’ge 0.58 % Alb. in 
= ° Fr or 3.69% Alb. 
) in Wfr. 
