402 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



known to occur in the bay, one of them very abundantly ; but as these 

 have only two fins on the back while the cod has three, it will be easy 

 to distinguish them ; young pollock, too, can be at once distinguished 

 from Cod by the long lower jaw, which protrudes far beyond the uyper, 

 even when the mouth is closed. — Editor.] 



OlS THE IIVSENSIBIL,1TY OF THE GEBMAIV CARP TO FREEZIIVO. 



BY DR. OEOROE WIGG. 



[Extract from a letter to Prof. Spencer F. Baird.] 



I have a German carp in my office frozen stiff six times in one month, 

 yet each time after six hours came out all right ; am going to put him 

 into a tub in the garden. 



Clay Center, Mo., 3Iarch 23, 1882. 



FIRST ARRITAL OF ITIACKEREL. IIV NETWORK IN THE SPRIIVQ OF 



1S83. 



BY CAPT. J. lY. COI.I.IWS. 



[Letter to Prof. Spencer F. Baird.] 



Mr. W. A. Wilcox, writing from Boston, under date of Aj)ril 1, sayS; 

 " The first new mackerel arrived in Kew York this afternoon. Schooner 

 Nettie Eowe — new vessel from Gloucester — brings in fifty barrels; all 

 large fine fish." 



AN INQUIRY INTO THE FIRST FOOD OF YOUNG liAKE ^VHITE- 



FISH (Coregonus chipeiformis) 



BY PROF. S. A. FORBES. 



[A letter to Prof. Spencer F. Baird.] 



I write only to inform you of the successful conclusions of a final ex- 

 periment relating to the first food of the lake whitetish. I kept several 

 thousand in a tank in the Exposition Building in Chicago, and kept 

 them constantly supplied, for two weeks, with everything that a to wing- 

 net of very fine Swiss would take from the water of the lake. A hundred 

 specimens were put into alcohol every two days, and finally all remain- 

 ing were similarly preserved. During the latter part of the time tbey 

 could be easily seen i^ursuing and catching the entomostraca. I have 

 not time at present to examine the fishes preserved, as I am busy with 

 other work. I have just searched the intestines of ten, taken out March 

 23, to get at some idea of the result of the experiment. Taking them at 



