BULLETIN OF THE UNITED STATES FISH COMMISSION. 447 



104.— PERIOD OF INCUBATION OF EGGS OF GERMAN CARP. 



By H. II. < Alt*, M. D. 



[From a letter to Prof. S. F. Baird. J 



I have been taking some pains for the past two years to ascertain the 

 period of incubation of the eggs of German carp. A statement in 

 your report for 1875-'7G that they hatched in from twelve to sixteen 

 days was doubtless based on a lower temperature of water than prevails 

 in this latitude during the hatching season. Last year, with the tem- 

 perature of the water at about G9° the eggs hatched in about five to six 

 days. The present year, with a higher temperature of water, a more 

 carefully conducted experiment has demonstrated that the eggs will 

 hatch in from forty-eight to seventy-two hours. The eggs hatch finely 

 in water at a temperature of 90°. 



La Grange, Ga., October 21, 1883. 



lOS SUCCESS OF THE UNITED STATES EXHIBIT AT THE LONDON 



INTERNATIONAL FISHERIES EXHIBITION. 



By JAMES KUSSELL LOWELL. 



[Dispatch No. 552, to Hon. Fred'k T. Frelinglmysen, Secretary of State.] 



I have the honor to report that the International Fisheries Exhibi- 

 tion promises to be far more successful than even the most sanguiue of 

 its projectors had ventured to hope. The wisdom of Congress in mak- 

 ing so liberal an appropriation in furtherance of its object is entirely 

 justified both by the substantial encouragement given to the enterprise 

 at its inception by this proof of interest on the part of the United States, 

 and by the fact that the section devoted to our country is more valua- 

 ble than that of any other, and valuable for reasons of which we may 

 very properly be proud. 



I have the highest authority for saying that, quite apart from any 

 consideration of intrinsic interest or curiosity, our share in the Exhibi- 

 tion is superior to all others in virtue of the scientific intelligence shown 

 n its arrangement and classification, thus rendering it more instruct- 

 ive than any other. This is especially gratifying because it is a triumph 

 of a far higher kind than could be won by any ingenuity in our contriv- 

 ances for the breeding or mechanical perfection in our implements for 

 the taking of fish, though in these also we may safely challenge and in 

 some cases defy comparison. 



The credit of this unquestioned success is due undoubtedly in the 

 first place to Professor Baird, whose absence is universally regretted, 



