SEVENTH ANNUAL REPORT. ol 
tain the number of employees required to operate them. While 
there are about 40 employees at the Naples establishment perhaps 
not more than 8 are directly connected with the aquarium ex- 
hibit, most of them being attendants in the laboratories of the 
biological department. The station has collectors on its force, 
providing material for both aquarium and laboratories, but per- 
haps the bulk of the material placed on exhibition is purchased 
from the local fishermen. At Brighton, where there is a concert 
hall and a restaurant, the aquarium attendants probably consti- 
tute the smallest part of the force. This may also be true of the 
aquarium at Berlin, which maintains an aviary and other exhibits. 
The simple but attractive collection at Plymouth is apparently 
cared for entirely by the custodian, who lives in the building. 
A natural-history museum occupies a portion of the building 
of the Amsterdam aquarium. Six persons were found in at- 
tendance at this aquarium, but doubtless others were available 
among the employees of the Zoological Garden, of which it 
forms a part. Perhaps the simplest of all these aquariums is 
that of the fresh-water aquarium of the Trocadero at Paris, 
where a single caretaker seemed to be sufficient. 
Although the corridors of European aquariums are usually 
rather dark, the tanks are well lighted, and as the water is 
usually clear the collections, with their attractive backgrounds, 
can be viewed satisfactorily. 
All these aquariums, while attractive and popular, have small 
collections as compared with those of the New York Aquarium, 
which, with its hundred tanks and pools, could probably carry 
the collections of any two of them with safety. Their combined 
attendance probably does not equal that of the New York 
Aquarium, which averages 5,000 visitors a day throughout the 
year. Doubtless the fact that the New York Aquarium, with 
its very large collection of native and tropical fishes, is main- 
tained free to the public accounts for its very large attendance. 
An admission fee is charged at all the European aquariums 
except that of Paris. 
Respectfully submitted, 
CuHartes H. TOWNSEND, 
Director. 
December 31, 1902. 
