346 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



Donnern, is preparing for the uext spawning and hatching season in 

 said establishment a permanent depot for embryonated eggs of the 

 most vakiable kinds of fish from Korth America, South America, and 

 from European lakes and rivers, with the view of facilitating the ob- 

 taining of embryonated eggs by the piscicultural establishments of all 

 countries, but especially Austria-Hungary, and of thereby giving a gen- 

 eral impetus to pisciculture. 



There are no difficulties whatever in the way of this undertaking, be- 

 cause Mr. von Busse has 14 vessels of his own continually out at sea, 

 and maintains direct commercial intercourse with America. Mr. Von 

 Busse is moreover, during the current year, sending specimens of all 

 the different species of fish found in the Korth Sea, carefullj^ packed in. 

 ice, to Professor Mather in New York, where plaster casts of these fish 

 are taken for the museum of that city. There is, therefore, no doubt 

 that the prominent American pisciculturists, who have so far showed 

 themselves exceedingly generous, will also in the future continue to ex- 

 tend to us their sympathy and generosity. 



Austro-Hungarian pisciculturists who should wish to procure some of 

 the above-mentioned embryonated fish-eggs direct from the depot at 

 Donnern are herewith requested to send all orders to the undersigned. 



JOSEPH SWETITSCH, 

 Director of the Piscicultural Estahlisliment at Donnern^ 



near Bremerliaven^ P. 0. Loxstedt. 



TREATMENT OF FISH EOC^S AT SEA. 



By von BEHR. 



Berlin, October 20, 1879. 



The honorable board of directors of the North German Lloyd has for 

 years taken charge of the exchange of fish eggs between American 

 pisciculturists and the German Fishery Association, and has done this 

 with the greatest generosity and entirely gratuitously. 



Such small exchanges may possibly also be made during the coming 

 winter without any one accompanying the boxes during the voyage. 

 By the kind co-operation of Captain Neynaber, of the steamer Mosel, we 

 give below all those little hints which should be observed if the precious 

 fish eggs are to reach the other shore of the ocean alive and in good 

 condition. 



It is desirable that the honorable board of directors should hand a 

 copy of this circular to every one of their captains, for our American 

 friends sometimes send us a small box with eggs quite unexpectedly, 

 so that we have no time to notify the captain who has charge of them 

 and ask him to take the necessary precautions. 



According to Captain Neynaber's opinion, the following are the chief 

 points : 



