ON THE TRANSPORTATION OF SHAD. 

 The following table exhibits the results: 



375 



Date. 



July 1 

 2 



64 

 65 



68 

 63 



a 



o 

 o 



66 



65 

 66 



68 

 •30 



65 



66 

 66 

 68 

 72 



a 



64 



65 



68 

 70 



Average mean , 



Time 120 hoars (5 days). 



65 



65 



66.25 

 68.5 

 70 



66.95 



Remarks. 



Eggs from fish at 9 p. m. ; put in hatcher at 10 a. ra. ; water 

 in river 82° ; found a flow of twenty gallons per hour suffi- 

 cient. 



Eyes showed black at midnight ; fish lively in egg. 



A few hatched at noon, and swimming at night. 



About half hatched at noon ; all batched at 9 p.m.; very 



strong and lively ; put them in the river next morning 



(7th). 



These trials have, I think, proved two things : first, that a flow of 

 water that does not give motion to the egg sufficient to hold it in sus- 

 pension will not hatch strong shad ; and, secondly, that it is possible to 

 hatch them in transit with a limited supply of water. The same water 

 was used two to three days, and was well aerated in its fall from the 

 hatcher into the barrel and by pouring from a pail from there into the 

 reservoir. 



As I found in my attempt to carry young shad already hatched to 

 Germany for the Commission last year that the thermometer varied little 

 from 62°, I think it possible that at that temperature the hatching will 

 be delayed from six to seven days, and the fry delivered on the other 

 side before they have suffered much, if any, from lack of food. 



In order to test the endurance of shad-eggs, I made the following trial 

 of 4,000 spawn with the same flow of water as before, using ice. 



I do not consider the average mean temperature to be a fair test in 

 this trial, as it was probably the lowest point that did the damage ; and 

 if the temperature of the river for the twelve hours they were in it had 

 been figured in, the mean would have been much higher. As it is, the 

 mean was only about 5£° below the former trial, which was so successful, 



