Manual of Suggestions for Teachers to Accompany Elementary Biology
Manual of Suggestions for Teachers to Accompany Elementary Biology
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In our eReader you can find the full English version of the book. Read Manual of Suggestions for Teachers to Accompany Elementary Biology Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Manual of Suggestions for Teachers to Accompany Elementary Biology
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It is better to use an arrangement that permits the inversion of the seedlings from time to time.
A convenient arrangement for the study of geotropism consists of two panes of glass (any size will do), one serving as a base and the other as a cover. The bottom glass is covered with cotton wool or wrinkled filter paper, upon which soaked seeds are placed. In placing the cover on top of the seeds, it is well to insert bits of cork under the corners, to prevent crushing the seeds. The two panes ar...e held together by means of rubber bands. The wet cotton or paper extends beyond the end of the glass. The whole arrangement is set up vertically in a shallow dish containing a little water in the bottom. The cotton or paper protruding beyond the top of the glass is turned back into the water. In this way the absorption of water to keep the seeds moist is not altogether from below. After the seeds have sprouted, the position of the hypocotyls is noted, and every day or two the glasses are turned over.
What to read after Manual of Suggestions for Teachers to Accompany Elementary Biology?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin C Benjamin Charles Gruenberg to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is better to use an arrangement that permits the inversion of the seedlings from time to time.
A convenient arrangement for the study of geotropism consists of two panes of glass (any size will do), one serving as a base and the other as a cover. The bottom glass is covered with cotton wool or wrinkled filter paper, upon which soaked seeds are placed. In placing the cover on top of the seeds, it is well to insert bits of cork under the corners, to prevent crushing the seeds. The two panes ar...e held together by means of rubber bands. The wet cotton or paper extends beyond the end of the glass. The whole arrangement is set up vertically in a shallow dish containing a little water in the bottom. The cotton or paper protruding beyond the top of the glass is turned back into the water. In this way the absorption of water to keep the seeds moist is not altogether from below. After the seeds have sprouted, the position of the hypocotyls is noted, and every day or two the glasses are turned over.
What to read after Manual of Suggestions for Teachers to Accompany Elementary Biology?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin C Benjamin Charles Gruenberg to read onlineMoreLess
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