320 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
CoLLectinG OuTrir. 
The spawn-taker: 
This lay figure represents a man in the act of taking the eggs from a ripe salmon. 
The fish casts in front of him show the condition of the ovaries and spermaries of 
ripe male and female salmon. 
Spawn-taker’s bucket: 
Part of a spawn-taker’s outfit, and is principally used in the collection of shad 
After the eggs have been fertilized and all of the pans refilled they are emp- 
tied into the bucket, where they are held until they reach the hatchery, the water 
being changed from time to time. 
eggs. 
Spawning pans: 
May be of either tin, wood, or marbleized iron, and form a part of a spawn-taker’s 
outfit in collecting eggs of white-fish, trout, shad, ete. 
Collins’s egg pan: 
An oblong pan with a tumble-in top, provided with an iron bail and cover, the 
latter preventing loss of eggs from slopping out, and the former fac ilitating the 
handling of apparatus in the boat. Pan is 184 inches long, 10} inches wide, 83 inches 
high, without cover; tinned and shellacked inside to prevent the iron corroding from 
contact with sea water. Designed by Capt. J. W. Collins. 
Salmon spawning hox or jacket: 
A wooden box 42 inches long and tapering from 83 inches to 35 inches in height, 
and from 5 inches to 13 inches in width. This box is used on the Columbia and 
Rogue rivers in stripping ripe salmon. The fish is placed on its back in the box, its 
head being secured with wooden slide and tail by a strap attached near the small 
end of the box, and is readily stripped by one man, whereas two or perhaps three men 
would be required without the box. 
Invented by R. D. Hume, of Golden Beach, 
Orege., in 1879. 
pt) 
Resuuts oF FISH-CULTURE. 
Chart illustrating the effects of fish-culture on the shad fishery. 
ImMprRovepD Cait FIsHway. 
[Seale of model 1 inch to the foot. Inclination 1 to 4.] 
A series of comparatively still-water compartments arranged in steps and separated 
by cross bulkheads with suitable openings allowing the fish to ascend the fishway by 
either leaping the small waterfalls over the bulkheads or passing through the open- 
This fishway can be constructed of either timber, masonry, or concrete, and on 
a straight line or angles and curves, as the conditions may require. It is applicable 
various forms of existing dams and natural falls, and owing to the abundance 
ings. 
to the \ 
of light through the open spaces on top can be readily inspec ied and the débris 
sasily remoy ed. Protection against drift ice and logs during freshets is provided, and 
there are no regulating gates or other devices requiring an attendant. The floor 
compartments are slightly inclined, and the bulkheads run obliquely in order that 
the current passing through can readily clear gravel, sand, mud, and other rubbish, 
which is an improvement over many other types of fishways. The original fishway 
was designed by Mr. Richard Cail and is used successfully in Scotland. 
Improvements were made by H. von Bayer, architect and engineer of the U.S 
Fish Commission, as follows: (1) Beginning at the top the openings in bulkheads 
are decreased successively so as to insure an overflow over each bulkhead down to 
the lowermost in case of any leakage in the fishway. (2) The bulkheads are placed 
obliquely across the fishway, so as to make each compartment self-cleaning. 
PHOTOGRAPHS ILLUSTRATING FISH-CULTURAL OPERATIONS AT THE STATIONS AND ON 
VESSELS OF THE U. S. FisH CommMISSION. 
Rearine ponds and buildings in back- Winter storage tanks, Craig Brook. 
ground, Craig Brook, Me. Fly house, Craig Brook. 
Tents, hatcher y, and barracks, Craig Interior of fly house, Craig Brook. 
Brook. Rearing ponds, Craig Brook. 
Upper tier of rearing troughs, Craig Pond covered with netting, Craig Brook. 
Brook. Hatchery and lake, Grand Lake Stream, 
Lower tier of same. Maine. 
Rearing troughs and hatchery, Craig Fish inclosure and watchman’s lodge, 
Brook. 
Grand Lake Stream. 
