84 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
in each of the six cylinders; but, owing to the eggs having stood in 
buckets for some hours while the apparatus was being arranged, the 
number hatched out was very small, about 25 per cent. 
On May 11 a shipment of 1,250,000 shad fry was made by the steamer 
Halcyon, to be deposited in the Sassafras River. 
On May 14.2,000,000 good impregnated shad eggs were sent to Dr. 
E. G. Shortlidge, Wilmington, for the Delaware fish commission. 
On May 15 a second trial was made with the cylinders, which resulted 
very satisfactorily. On the previous trial a great many young fish had ; 
broken their sacs by trying to get through the wire gauze. In this in- 
stance a layer of cheese-cloth was placed over the wire, thereby pro- | 
tecting the eggs and young fish. It being fine weather and the water 
smooth a percentage was hatched out equal to that secured by the cones. 
On May 19 a second shipment of 1,054,000 shad fry was made by the 
steamer Halcyon, designed for the Chester River ; but, owing to an ac- j 
cident to her machinery, the fish were deposited in Elk River and Bo- 1 
hernia Creek. 
On May 23 it was found that the percentage of fish hatched from eggs j 
received within the few preceding days had been very small owing to 
so many dead eggs being found in the jars and cones. Eggs which, 
when brought onboard, seemed in prime condition and properly impreg- 
nated, died rapidly after being in the apparatus for thirty-six hours. 
The work continued until May 26, when, in accordance with instruc- 
tions, hatching operations were discontinued for the season, and all fish 
and eggs on hand were transferred to Battery Station. 
Table I. — Meteorological record made on hoard steamer Fish Hawk, Susquehanna River , 
from May 3 to 26, 1887. 
Date. 
Air. 
Surface. 
Bottom. 
Jars. 
Direction of wind. 
Force 
of wind. 
W eather. 
Max. 
Min. 
Max. 
j Min. 
a 
a 
Min. 
i 
a 
Min. 
1887. 
o 
o 
° 
o 
o 
o 
0 
o 
May 8 
80 
60 
60 
58 
60 
60 
61 
59 
Variable 
0-3 
Clear. 
4.... 
81 
60 
67 
60 
61 
56 
63 
61 
SE.andNNE 
1-2 
Partly cloudy. 
5.... 
77 
58 
64 
62 
63 
62 
64 
63 
S. and E 
1-5 
Clear. 
6 
78 
54 
67 
63 
65 
62 
67 
64 
S. and E 
0-4 
Partly cloudy. 
7 
76 
65 
66 
64 
66 
64 
68 
65 
N. and E 
2-4 
Squally and rainin^. 
8 
68 
58 
65 
65 
65 
65 
66 
66 
S. and E 
2-5 
Cloudy. 
9..... 
68 
60 
65 
65 
66 
61 
66 
66 
S. and E .. 
3-4 
Do! 
10 
72 
59 
66 
65 
65 
65 
66 
65 
S. and E 
0-4 
Foggy. 
n 
75 
62 
68 
65 
69 
65 
69 
66 
S. and W 
0-3 
Partly cloudy. 
12 
77 
62 
70 
67 
69 
67 
70 
68 
S. and W 
0-3 
Clear. 
13:... 
77 
56 
73 
68 
71 
68 
71 
69 
Variable . .. 
0-3 
Do. 
14 
78 
50 
72 
68 
68 
67 
70 
68 
V ariable 
1-4 
Do. 
15 
76 
52 
69 
68 
69 
67 
70 
68 
S. and W,S. andE... 
0-2 
Do. 
16 
88 
53 
73 
68 
70 
68 
73 
69 
S. and W., S. and E. .. 
0-2 
Do. 
17 
78 
58 
72 
69 
70 
68 
72 
69 
Variable..... 
0-3 
Do. 
is 
82 
59 
72 
68 
71 
69 
72 
70 
V ariable 
0-2 
Do. 
19 
80 
61 
74 
69 
73 
68 
74 
69 
Variable 
0-3 
Do. 
20 ..... 
79 
64 
74 
61 
73 
70 
75 
71 
3ST. and E., S. and W. .. 
0-4 
Partly cloudy. 
91 
84 
68 
75 
73 
75 
72 
76 
73 
S. and W 
0-4 
Do. 
99 
88 
63 
75 
72 
75 
71 
75 
73 
S. and W 
1-4 
Do. 
23 
78 
64 
75 
74 
74 
73 
76 
74 
Variable „ 
3-5 
Clear, 
91 
81 
67 
75 
74 
75 
74 
76 
74 
S. and E 
3-7 
Cloudy. 
95 
90 
62 
76 
74. 
75 
74 
77 
74 
Variable 
0-8 
Squally. 
26 
82 
63 
75 
74 
74 
73 
75 
75 
Variable 
0-9 
Cloudy and raining. 
State of water, clear. 
