56 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
principally in the headwaters of the Delaware River. In addition, 
3,654,000 eges were transferred to the land station, for lack of space, 
and 15,000 forwarded to H. H. Fields, Museum of Comparative Zodlogy, 
Cambridge, Mass., for biological study. . 
The Gloucester Point seine afforded 2,488,000 eggs, which produced | 
81 per cent in fry; Faunce’s seine, 10,566,000 eggs, which produced 70 
per cent in fry; and Howell Cove seine, 20,861,000, which yielded 65 
per cent in fry. The number of days when eggs were obtainable from 
these seines was 12, 14, and 17, respectively. More than 1,000,000 eggs 
per day were procured during five days at Faunce’s; at Howell Cove 
more than 1,000,000 a day for five days and more than 2,000,000 a day 
during five other days. The average production of eggs to each fish 
was 49,000, which is largely in excess of the yield at the Susquehanna 
and Potomac river stations. 
1890-91. 
On June 17, 1891, operations were commenced in the propagation of 
Spanish mackerel, the locality selected being Cape Charles, Virginia. 
At the end of the fiscal year covered by this report,-June 30, 1891, the 
work was in progress, the results to that date being embodied in tab- 
ular form. Subsequently, 1,364,000 eggs were obtained. These were 
collected on sixteen days between July 7 and 30, the fry produced and 
liberated therefrom being 410,000. The total eggs obtained were 
2,494,000 and the total output of fry 776,000. 
The ova were derived from adults taken in trap nets, which were 
regularly used in market fishing. The most forward eggs produced 
fry in 214 hours, the longest period of hatching being 323 hours, and 
the average period about 26 hours. The fry were released in Ches- 
apeake Bay. 
Table showing operations in the propagation of the Spanish mackerel. 
| Fish stripped. | | Hour of— | | anes 
Date ————| Number of | = SS = Date of | of fry 
lWrales.|Females.| ©2385 aaa Dep enue Hatching. release. | ralensed 
Pats peel ae sa 2) |e eral ae eye a | 
1891. | | | | 
June 17 | 15 5 240,000 | 7:30a.m. | 5a.m.June 18. | June 19 80, 000 
18 | 10 7 300, 000 | 8 ams |S ame dinne dss |store a. eneteeeeeeentes 
19 3 3 315,000 | 8:15a.m. | 5p.m.June 20. | June 21, 200. 000 
23 5 3 80,000 5:30a.m. | 8a.m.June 24. 25. 20, 000 
25 | 1 | 1 60, 000 | 7 a.m. | 8a.m.June 26., | 27 20, 000 
25 3 | 3 . 20, 000 | 8 ams") -9 a.modune 26;, |23-c.-5--¢ |eeecee aes 
29 7 5 115, 000 | 5 am. | 8a.m.June 30. | June 30 46, 000 
Total..| 44 27 | 1, 130, 000 et See bene sete ee ee eee eee 366, 000 
| 
