28 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
Lobster.—In the hatching of the lobster greater success than formerly 
was met, by the substitution of the universal hatching jar for the tidal 
jar, whereby the clotting of the eggs was greatly diminished. The pro- 
ductive period was from April 28 to June 30, during which time from 
482 lobsters were taken 4,353,800 eggs, yielding 3,533,900 fry, or 81 per 
cent. The eggs were obtained from lobsters captured in pots operated 
by the employés of the station and from local fishermen, who codperated 
in the work, saving all the ripe eggs from among the lobsters handled 
by them. 
The monthly mean temperatures and densities of the salt water used 
in hatching operations of the station were as follows: 
Month. I Saieee “) Density. 
Wecembervee. == -2-25525--—= 36.4 1. 0252 
BMA WAY Soot oegasosa. >sosase 33.1 1. 0274 
MODI AEA eaten ee oe eee 34.1 1. 0308 
Marche i ecpeeeae seen nae eae 35.7 1. 0274 
AMDT faeeeee assets stem 44.3 1. 0256 
IWR f sepa sedanesoos ac se aaa: 52.1 1.0271 
‘Mit Cspsadasseaesacce seasaH 61.2 1. 0259 
CoLp Sprinc Harpor Station, New York (FRED. MATHER, SUPERINTENDENT), 
This station has continued in operation as in previous years. Most 
of the eggs received and consigned as foreign exchanges passed through 
it, where they were examined and, if necessary, were repacked before 
they were forwarded to their destination. A considerable number of 
Atlantic salmon eges were hatched here for the Hudson River, the pro- 
duction of that and other species for the two years being as follows: 
7 oe ee EES ey 
Kind: Sues: received, produced. 
1889-90. | 
Atlantic salmon ....-- | Craig Brook Station............---- 600, 000 | 506, 400 
Landlocked salmon.. | Schoodic Station .-.-.-..-..-------- 85,000 | 80, 000 
Wake trowbe.4 --2:. == Northville: Station... 6-022 - sete 500, 000 | 470, 000 
1890-91. . 
Loch Leven trout... -. Northville Stabion)s-soceeerese ees 20, 000 18, 000 
MAkeveroulteatee «ead (RSs eens Some aaberodac 500, 000 | 482, 600 
GLOUCESTER City STATION, NEW JERSEY (JOHN GAY, IN CHARGE). 
’ ? 
1889-90. 
The propagation of shad by the Commission has been confined mainly 
to its stations on the Susquehanna and Potomac rivers, though some 
attention has been given to work on the Delaware River through the 
use of the steamer Fish Hawk and one of the distributing cars. In the 
spring of 1890 Mr. W. J. Thompson, of Gloucester City, who is largely 
interested in the fisheries of the Delaware River, offered to erect on his 
