INCUBATION. 



removal ; several of those formerly in use are 

 shown in Fig. 18. 



FIG. 18. 



A is a pair of pincers with pointed blades ; B 

 is a pipette, while Cf is a scoop to be placed be- 

 neath the egg, which is to be thrown out by a sud- 

 den turn of the wrist. We have tried all these, 

 and found them slow and by no means sure. The 

 object should be to remove the dead spawn with- 

 out disturbing others in the vicinity ; with B and 

 C this can not be done, and the difficulty of man- 

 ipulation of A is much greater than would be im- 

 agined. We felt the necessity of some new instru- 

 ment for the purpose, and finally suggested the 

 bulb-syringe (Fig. 19). This has been adopted by 

 most of our many American fish culturists, and 

 has given the most perfect satisfaction. It consists 



