Excerpt from Transactions of the American Fisheries Society, 1921-1922, Vol. 51: Fifty-First Annual Meeting, Allentown, Pennsylvania, September 5, 6, 7, 1921 Mr. Titcomb: As to propagating trout in a hatchery with a tempera ture of 74 or 70 for a month at a stretch, it is a proposition that I do not want to invest any money in, and I would not want the tax payers to invest any money in it. Mr. G. C. Leach, Washington, D. C.: At Manchester, Iowa, a spring stream meanders through the meadows for quite a distance where it warms up in summer from 48 to 65 F. Before reaching the hatchery grounds. We take brook trout out of the ponds and put them in the stream where they live under more or less natural conditions. During the heat of the day they congregate in pools probably five or six feet in depth, and where there is a strong current. The volume of water is probably 800 to gallons a minute. I seriously doubt if we would be able to hold these trout in the stream successfully with a volume as small as 150 or 200 gallons per minute. We got from 85 to 90 per cent fertilization from the trout eggs obtained from the creek as against 50 per cent from trout held in the ponds at I think our success was due to the fact that the stream has a rocky bottom, deep pools, and a very large volume of water. To a certain extent we were raising wild trout. We shipped rainbow trout to Louisiana to ascertain if they would live in certain streams. The water temperature there was about and some of the fish were reported eight or ten inches in length the first year, but they never reproduced. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."