‘254 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
among' the latter, and by 4 o’clock in the evening of tbe same day 56 of tliem bad died. 
Salt was the first remedy decided upon; so tbe water in tbe pond was drawn down to 
about 300 gallons or probably a little more, and 150 pounds of common salt were 
sprinkled evenly tlirougb it. Tbe fisb were allowed to remain in tbis brine about 15 
minutes, when they showed signs of weakening by turning on their sides; then fresh 
water was turned on freely. Tbe good result was at once noticeable, tbe fish becoming 
quiet, and appearing to rest more easily. It was my intention to give them another 
salting two days later, but as they were steadily improving I concluded that another 
application was unnecessary. The final result was that 70 per cent of the adult rain- 
bows that had been treated with salt were saved, while of the yearling brown trout, 
that were not thus treated, nearly 71^- per cent died. 
Foul ponds are dangerous, and will produce disease if not attended to. If the fish 
get sick from this cause, they should be removed to a clean i>ond at once; give them 
a salt-aiid-clay bath, and then turn on an increased amount of fresh water for ten days 
or more following. 
The adult fish are very liable to be affected with fungus. It generally comes 
after a bruise or hurt, or when the fish is in au emaciated condition. If the trouble 
results from an injury, it can often be cured before it spreads to the sound flesh; but 
if fungus spreads like a slimy web all over tbe fisb, it is sure death. Just after 
spawning, they are especially susceptible to fungus. They should be handled very 
carefully during tbe spawning season to prevent tbe moving of a scale or scarifying 
tbe body in any way, either of which would be almost sure to be followed by fungus. 
If there is any hope of saving the fish, it should l>e treated at once, and I do not know 
of a better remedy than salt. Catch the fish and rub the salt on the affected part, 
and then release it in a pond, or tank, by itself, where it can be gotten for treatment 
in a day or two again. Tbe fish that are affected all over the body should be killed 
and thrown out at once, as there is no chance to save them. 
I have given in the preceding pages such practical information as I could in refer- 
ence to tbe artificial i)ropagation of tbe rainbow +rout, and hope that it may prove of 
value to those interested in such subjects. The results that have followed onr eftbrts 
in au endeavor to stock various streams in many different localities of our common 
country with this gamy and delicious fisb, beloved alike by epicure and angler, have 
in most instances proved successful and have demonstrated the practicability of vary- 
ing and increasing our food supply, and at the same time xtroviding another source 
of amusement and recreation for all the votaries of rod and reel. 
CORRESPONDENCE RELATIVE TO THE RAINBOW TROUT. 
The following extracts from letters of correspondents may x)rove interesting as 
showing the exx^erience of flsh-culturists in different xiortions of the United States: 
[From W. D. Noel, of Leb.inon, Mo., Api-il 7, 1896. J 
The Uniteil States Fish Commission xilanted, about 12 years ago, rainbow trout in Bennett’s 
spring, which hows into Neaugua River about a mile from the spring, making a stream from 100 to 200 
feet wide and from 1 to 3 feet dee 2 >. They have increased to a wonderful extent in the sxiring branch, 
and to ([uite an extent in Neaugua River. They have been caught 8 miles aliove and 25 miles below the 
mouth of the branch, they are the gamest fish we have and are exceedingly shy. They take the fly 
here better than any bait. As for eating tpialities I do not think it equaled by any Iresh-water lish. 
