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Books Books 1 - 10 of 47 on Survey have shown that the northward distribution of terrestrial animals and plants....  
" Survey have shown that the northward distribution of terrestrial animals and plants is governed by the sum of the positive temperatures for the entire season of growth and reproduction, and that the southward distribution is governed by the mean temperature... "
Bulletin - Page 105
by United States. Weather Bureau - 1899
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Proceedings of the ... Annual Meeting of the Georgia ..., Volume 32, Part 4

Georgia State Horticultural Society - Fruit-culture - 1908
...temperature for the entire season of growth and reproduction, and the southward distribution is governed by the mean temperature of a brief period during the hottest part of the year." Does this help us in determining how far north or south a given fruit may be grown? Not at all, for...
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Journal of Horticulture, Cottage Gardener and Home Farmer

Agriculture - 1895
...total quantity of heat during the season of growth and reproduction, and in southward distribution by the mean temperature of a brief period during the hottest part of the year. The anomalous intermingling of boreal and austral types which occurs over an extensive area of the...
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Yearbook of agriculture. 1894

Technology & Engineering - 1895
...data previously collected by the division, that species are limited in their southward distribution by the mean temperature of a brief period during the hottest part of the summer. For experimental purposes the mean normal temperature of the hottest six consecutive weeks...
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Yearbook of Agriculture

Agriculture - 1895
...positive temperatures for the entire season of growth and reproduction. In southward distribution they are restricted by the mean temperature of a brief period during the hottest part of the year. It is believed that these two principles cover the fundamental facts of distribution. RECAPITULATION....
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Bulletin, Issues 5-13

Zoology, Economic - 1895
...for the entire season of growth and reproduction,2 and that the southward distribution is governed by the mean temperature of a brief period during the hottest part of the year.3 ZONE TEMPERATURES. THE BOREAL REGION. Arctic, Hud-sonian, and Canadian zones. The distinctive...
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Bulletin, Issues 9-12

Zoology, Economic - 1898
...temperatures for the entire season of growth and reproduction* and that the southward distribution is governed by the mean temperature of a brief period during the hottest part of the year.3 ZONE TEMPERATURES. THE BOREAL REGION. Arctic, Hudsonian, and Canadian zones. The distinctive...
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Life zones and crop zones of the United States

Clinton Hart Merriam - Crop zones - 1898 - 79 pages
...for the entire season of growth and reproduction? and that the southward distribution is governed l>y the mean temperature of a brief period during the hottest part of the year.3 ZONE TEMPERATURES. THE BOREAL REGION. Arctic, Hudsonian, and Canadian zones. The distinctive...
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Life Zones and Crop Zones of the United States, Issues 9-12

Clinton Hart Merriam - Crop zones - 1898 - 79 pages
...the entire season of growth and reproduction,2 and that the southward distribution is governed by Hie mean temperature of a brief period during the hottest part of the year.3 ZONE TEMPERATURES. THE BOREAL REGION. Arctic, Hudsonian, and Canadian zones. The distinctive...
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Bulletin, Issues 27-32

Meteorology, Agricultural - 1899
...positive temperatures for the entire period of growth and reproduction. In southward distribution they are restricted by the mean temperature of a brief period...generally inactive as far as reproduction is concerned ami most plant life is absolutely inact i vc at temperatures below and near freezing point, 43 F. was...
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Proceedings of the Davenport Academy of Natural Sciences, Volume 7

Science - 1899
...temperatures for the entire season of growth and reproduction. "In southward distribution they are restricted by the mean temperature of a brief period during the hottest part of the year." These principles cover the fundamental facts. Some species have adapted themselves to a wider range...
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