(j54 NEW JKHSKY ACUUCULTUEAL COLLEGE 



inout, for the ronson that even it' the tislies Avere incliued to escape 

 from the waters in whieli tliev were placed, as an nncongenial en- 

 A-ivonment, some of them would surely remain long enough to 

 breed, and the young would most probably not be inclined to leave 

 the place of their birth. It is a fact well known from experience 

 with the food varieties that the larger species of fishes cannot be 

 successfully intiMduced into waters which do not fully meet their 

 nHpiirements, and the rule holds good with all larger animal life. 

 How far the rule will hold good with species so small and insig- 

 nitic^tur as Giwihusia and Heterandria can onW be determined by 

 exjH'riiiunu. When once a species breeds in a locality its spread is 

 geucrally only a question of time. It is, therefore, apparent that 

 |xn'sistent ami C'^ntinued etfort is necessary in making such experi- 

 ments, and the greater the scale on which they are attempted the 

 greater and more sjx^edy will bo the results. 



As certain exigencies prevented the making of the experiment in 

 the spring, it A\"as deemed worth while to make it in the fall, so as 

 to avoid further loss of time, and in the belief that there was a 

 gxHxl chance for at least a small measure of success. The summer 

 of ll.*0."> was phenomenally dry, the drouth extending through the 

 fall and greater part of the winter, so that many places naturally 

 adapted to lishes like Gambiisia and Heterandria were almost dry. 

 If the tish had been living and breeding in these places all simmier 

 it would have made little ditference. but in the cold season they 

 were untit as places for stocking. 



Tlu^ wt'ather remained so warm throughout the fall that it was 

 deemed undesirable to attempt to ship the tish before November, 

 as the temperature in Xorth Carolina, from which State they were 

 brought, in that month was much like the month of June in New 

 Jei'sey. In ^'ovendx^r, therefore, something over ten thousand 

 were successfully shipped to Delair, Xew Jersey, from which point 

 they were distributed as follows : 



About 8,000 in sj>ring and natural drainage rivulets llowing 

 into the ice pond at Westville; 



Six hundred in a land-locked pond near Delanco ; 



Six hundred in a mill pond Ix^twecn Merchantville and Eves- 

 lH>rt > ; 



Six hundred in huubhx^ked waters near Delair; 



Four hundred in ponds of the Aquarium Supply Company, at 

 Delair. 



