SCIENTIFIC SUMMARY. 
335 
direction of M. Anton Dohrn, is rectangular, measuring 100 ft. by 70 ft., 
with a height of 40 ft., and is 100 ft. from the sea. The lower part 
is to be occupied by the tanks of the great aquarium, to be opened to 
the public ; and the upper will contain 24 rooms for laboratories, a library 
and collections, with lodging rooms for three or four zoologists. There will 
be 53 tanks in the lower story, one of them 32 ft. long, 10 broad and 3§ 
deep, another, 26 ft. long, and twenty-six 3 ft. by 3| ft. The tanks through- 
out are furnished with a continuous current of sea-water. Upstairs, the 
library room is large enough to hold 25,000 volumes. The principal 
laboratory room will contain 20 to 30 tanks of different sizes ; and besides 
there are private laboratories for the chief zoologist and the first assistant, 
and other small laboratory rooms, and rooms for collections. 
Three Additional Zoological Publications have lately made their appearance, 
and if we may judge from the first numbers and from the character of the 
editors, they are likely to commend success. The one, “Archives de Zoologie 
Experimental et Generale,” issued by Professor Lacaze Duthiers, will Take 
a high place among scientific periodicals, and is likely, in French zoological 
literature, to take the position which Siebold and Kolliker’s “ Zeitschrift ” 
takes in Germany. Professor Lacaze Duthiers, so well known for his 
thorough researches upon the Invertebrates of the Mediterranean, contri- 
butes an introduction to the first number, stating the aims of the publica- 
tion, and concludes the number by an elaborate article on the auditive 
capsules of Gasteropoda. The other original article of this number is 
written by Mr. Perrier, who has given us an excellent paper on the Natural 
History of a fresh-water worm (Deto) allied to Nais. This periodical, as 
well as the other “Journal de Zoologie,” published under the auspices of 
Professor Gervais, both have notes and reviews on scientific works published 
in countries outside of France, a feature which thus far has received but 
little attention from French scientific journals. Holland, which already 
publishes so many scientific memoirs and periodicals of great excellence, 
adds a purely zoological archive to its list, edited by Professor Selenka. 
The first number contains a tolerably complete embryology of one of the 
naked Gasteropoda by Selenka, and a long paper by C. K. Hoffman on the 
anatomy of Echinoderms; both these papers are excellently illustrated. 
Professor Selenka intends to issue his Niederlandische Archiv fur Zoologie 
whenever sufficient material is at hand ; he solicits articles either in German, 
French, or English. 
Appearance of Colour in Fish kept in Alcohol. — Mr. Pichard Bliss, writing in 
the “American Naturalist,” April, states that a short time since while ex- 
amining a number of alcoholic specimens of Cyprinoids from Ogden, Utah, 
collected by Mr. J. A. Allen last September for the Museum of Comparative 
Zoology, he noticed a species of Richardsonius distinguished by a bright 
vermilion spot on the abdomen. The size of the spot varied in different in- 
dividuals : in some it was quite small, in others it extended from the base 
of the pectoral fin to the anal opening. Calling Mr. Allen’s attention to 
this fact he stated, greatly to his surprise, that this colour was not present 
in the living fish when he caught them, but appeared after the fish had been 
in alcohol a short time. A dissection of one of these fishes showed Mr. 
Bliss that the colour was deposited in the areolar layer or derm, and was 
