ISBN: 9781459067257

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free.This is an OCR edition with typos.Excerpt from book:but… Altro …

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free.This is an OCR edition with typos.Excerpt from book:but the rollers. Give the screens a coat of paint or gas tar, and lay them away in a dry place until the next autumn. A stiff brush may also be placed under the forward roller, so that every time the roller is turned to remove the eggs the screen will be perfectly clean. The box can be so arranged that the rollers also can be removed each season; and this arrangement on various accounts is much the best. This box looks, at first sight, somewhat complicated, but is in reality very simple, and easier to make than to describe. Any one who has the knack of using tools can make one which will answer the purpose perfectly. The cost is very little more than that of the Ainsworth Screens (of the same area) as generally used. The cost for wire being the same in both cases, the lumber in the box itself being extra, and also the rollers, hinges, and cog-wheels (or windlass wheel). A few of the advantages of the plan are as follows : Let us compare a double row of forty Ainsworth Screens, each two feet square and occupying a space in the raceway forty feet long and four feet wide, with one of the new spawning boxes of the same dimensions. 1st. By the old way it would take two men a good half-day to remove the screens singly, feather off the eggs in a careful manner, and return each (double) screen to its proper place. It would take the'new spawning box about fifteen minutes to do the same work with one man. 2d. The weight of the gravel which has to be lifted in the old way every time the eggs are removed amounts to many tons in the course of a season. In the new box the gravel is not lifted at all. 3d. By the old way the operator's hands must of necessity be more or less wet during the whole operation. Now, as the trout and salmon spawn during the winter season, when t... Books Books ~~ Nature~~ General Domesticated-Trout~~Livingston-Stone General Books LLC This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from GeneralBooksClub.com. You can also preview excerpts from the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Original Published by: For sale at the Cold Spring Trout Ponds in 1877 in 404 pages; Subjects: Fish culture; Trout; Fish-culture; Nature / Fish; Pets / Fish & Aquariums; Pets / Reptiles, Amphibians & Terrariums; Sports & Recreation / Fishing; Technology & Engineering / Agriculture / General; Technology & Engineering / Fisheries & Aquaculture;<

ISBN: 9781459067257

Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: but… Altro …

Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: but the rollers. Give the screens a coat of paint or gas tar, and lay them away in a dry place until the next autumn. A stiff brush may also be placed under the forward roller, so that every time the roller is turned to remove the eggs the screen will be perfectly clean. The box can be so arranged that Purchase of this book includes free trial access to www. million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: but the rollers. Give the screens a coat of paint or gas tar, and lay them away in a dry place until the next autumn. A stiff brush may also be placed under the forward roller, so that every time the roller is turned to remove the eggs the screen will be perfectly clean. The box can be so arranged that the rollers also can be removed each season; and this arrangement on various accounts is much the best. This box looks, at first sight, somewhat complicated, but is in reality very simple, and easier to make than to describe. Any one who has the knack of using tools can make one which will answer the purpose perfectly. The cost is very little more than that of the Ainsworth Screens (of the same area) as generally used. The cost for wire being the same in both cases, the lumber in the box itself being extra, and also the rollers, hinges, and cog-wheels (or windlass wheel). A few of the advantages of the plan are as follows: Let us compare a double row of forty Ainsworth Screens, each two feet square and occupying a space in the raceway forty feet long and four feet wide, with one of the new spawning boxes of the same dimensions. 1st. By the old way it would take two men a good half-day to remove the screens singly, feather off the eggs in a careful manner, and return each (double) screen to its proper place. It would take the'new spawning box about fifteen minutes to do the same work with one man. 2d. The weight of the gravel which has to be lifted in the old way every time the eggs are removed amounts to many tons in the course of a season. In the new box the gravel is not lifted at all. 3d. By the old way the operator's hands must of necessity be more or less wet during the whole operation. Now, as the trout and salmon spawn during the winter season, when t. Books, Nature~~General, Domesticated-Trout~~Livingston-Stone, 999999999, Domesticated Trout; How to Breed and Grow Them, Livingston Stone, 1459067258, General Books LLC, , , , , General Books LLC<

2010, ISBN: 9781459067257

Softcover, Buch, [PU: General Books]