294 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
arrived. Owing to the low temperature of the water it was not 
deemed advisable to attempt the hatching of shad eges until June 5th, 
whena million were brought from the Delaware River. These hatched 
ina few days, and the resulting fry, together with the pike-perch fry, 
were planted in the Niagara River. On May 11th the first consign- 
ment of rainbow-trout eggs arrived from Leadville, Colo. From then 
until August the troughs were kept supplied with eggs of the rain- 
how, black-spotted, and steelhead trout, and the grayling. The first 
consignment of quinnat-salmon eggs reached Buffalo on September 6, 
havine been shipped on the Ist from Baird, Cal.; other consignments 
arrived on the 23d, and on October 11th 25,000 lake-trout eggs were 
received from Duluth, Minn. All of the eggs were hatched with little 
or no difficulty, and the fry, after serving the purpose of an exhibit, 
were turned over to the Niagara County Angling Club for stocking 
streams in the vicinity of Lockport, N. Y. This exhibit proved a 
most attractive and instructive feature of the Exposition, as evidenced 
by the large crowds constantly in the vicinity of the troughs. 
It is a matter of regret that it was impracticable to hatch any of the 
eges of the marine fishes propagated by the Commission, owing to the 
fact that the spawning season of none of these occurred while the Expo- 
sition was open. 
Another attractive feature was the working model of the Cail fish- 
way, as modified by the architect of the Fish Commission, Mr. H. von 
Bayer. Young trout placed at the foot of the raceway made their 
way in a few minutes to the top. 
An aquarium was provided, which occupied about 6,500 square feet. 
Around the side of the building, which was rectangular in shape, a 
circular corridor was arranged, on one side of which were 32 tanks, 
varying in size from 7 feet long, 5 feet wide, and 3 feet high to 3 feet 
long, 5 feet wide, and 3 feet high, in which were shown not only all 
of the fresh and salt water fishes propagated by the Commission, but 
also all of the important economic and food-fishes of the North Atlantic 
coast and the inland waters east of the Rocky Mountains; a few of the 
Salmonidee from the Pacific slope were also included. The corridors 
were in semidarkness, while the tanks were lighted from the back, 
thus making all of the animal life they contained plainly visible. 
Across the corridor from the tanks were mirrors to give the corridor 
the effect of increased size. The ceiling was constructed in Roman 
style of architecture, with groined arches radiating from columns 
located on either side of the tanks and terminating at circular drums 
or ventilators. The portion below the aquaria line was of sheet metal, 
forming below each tank a panel of rock-face stone; this was painted 
in a dark sea green, while the upper portion blended into a lighter 
color; the ribs, columns, and moldings were treated in a cream white. 
The tanks for the display of fresh-water fishes were supplied with 
water from the Niagara River, which was furnished free of expense 
