18 



REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



The lieaviest losses liaving occurred among the species derived from 

 eggs received from a distance, viz, the rainbow and brook trout, it is 

 inferred that i^ackiug and transportation were factors in the greater 

 mortalities shown, especially since the smallest loss occurred among 

 tlie Athmtic salmon, which were produced from eggs taken at the 

 station. 



When liberated, the Atlantic salmon were deposited in neighboring 

 brooks. Tlie landlocked salmon, with the exception of a few hundred, 

 were taken across the country and placed in (heen Lake. Of thello,i;3y 

 reared fish, 14,139 were still further retained for winter feeding, among 

 them some of each kind and age. These were placed in special tanks, 

 with the exception of a few which were kept in the open-aii' troughs 

 till late in the winter. The mortality during this period was small. 



1890-91. 



The collection of Atlantic salmon eggs was conducted with the coop- 

 eration of the States of Maine and Massachusetts. It having been de- 

 termined to devote more attention to the rearing feature, it was decided 

 to reduce the egg-collecting to a scale commensurate Avith the capacity 

 of the station, but a smaller number of eggs was obtained than was 

 desired, owing to the scarcity of adult salmon, only 133 being secured. 

 At the sx)awning time, October 1890, 77 of these remained alive in the 

 inclosures, of which 52 were females, yielding 553,400 eggs. The good 

 eggs remaining in January were divided, Maine receiving 204,000, 

 Massachusetts 133,000, and the United States 134,218. The share of 

 the United States was increased by the Maine commissioners, who con- 

 tributed 183,000 for purposes of hatching and rearing. 



In addition to the salmon eggs, there were also produced 23,146 of 

 the brook trout from fish artificially reared. These and other eggs re- 

 ceived at the station are noted in the list below : 



Kind. 



Atlantii' Ralnion 



Landlockt'il Huhiiun . . , 



Brook trout 



liocli Liivcii trout . . . 



Von lii'lir trout 



Scottish sou trout 



Source. 



Produced .it station 



Orand L.ike Stream Station. 



Produced at station 



Northvillc Station 



Germany 



Scotland 



Total iOG.UG 392.304 



Original Niimbci 

 number -^"'"'^'^i 



of eggs. 



hatched . 



317, 218 

 21,900 

 23, 140 

 16,583 

 15,119 

 12. 374 



31G, 308 

 21,824 

 14,.'C>t 

 Ki. 157 

 13. ><24 

 9. 307 



P>oth the Von IJclir and Loch Leven trout eggs ariivcd in jioor con- 

 dition, having already commenced hatching, and gave practically no 

 results. All other eggs were good, and the epidemic usually incident 

 to the months of May and Jnnc of former years did not occur. About 

 150,000 li.sh of the hatching ol' 18i)0 were cared lor in rearing tnmghs 

 till the present fiscal year, all being liberated iu October, 1890, except 



