75 
collection of fish compared to other aquariums that I have 
visited during the last six years 
Frank£ort-on-Main 
... 85 to 91 forms of fish seen 
Amsterdam 
80 
99 
Prighton 
54 
99 
Madras 
54 
99 
Berlin (now closed) 
52 
9 > 
99 
Naples 
... 40 to 47 
99 
Stibbington Hall (Capt.Yipai 
q’s) ... 44 
99 
Blackpool 
... 23 to 34 
99 
Hamburg 
... about 30 
»» 
99 
Gezira, Cairo 
... 27 to 30 
99 
Trieste 
... about 26 
99 
99 
Liverpool 
21 
99 
99 
Crystal Palace, London 
18 
>9 
99 
Dr. Henderson has written an interesting “ Guide to the 
Marine Aquarium,” published in 1912 by the Madras 
Government, Madras, from which. I quote the following 
extracts : — 
“ The Marine Aquarium, which is the first institution of 
its kind in India, was opened to the public on 21st October, 
1909. It was erected by the Madras Government with the 
two-fold object of providing an attractive display of living 
fish, and of furnishing the material for a scientific study of 
the fish and other marine animals of the Madras coast. 
“ The main entrance leads into a paved area with a central 
fresh- water pond, and on either side are placed five large 
tanks with plate-glass fronts. The seaward side of the 
central area is occupied by a large open tank stocked with 
turtles. At convenient places there are small isolated aquaria 
for special novelties, which for various reasons cannot be 
exhibited in the larger tanks, and with the exception of one 
or two of these, which contain fresh- water fish, and also of 
the central pond, all the tanks contain sea water. 
“ Sea water is conveyed to a covered well in the rear of the 
Aquarium, along a pipe filled by hand at the seaward end. 
From the well it is pumped into filter-beds, and from these 
passes to large elevated cisterns, whence it is distributed to 
the tanks. Fish in common with other living animals require 
a plentiful supply of oxygen, and this is ensured partly by 
direct aeration and partly by a circulation of water from 
