 | Josiah Parkes - 1848 - 96 pages
...attaining the temperature of the atmosphere, by which alone I thought them liable to be injured. But when I had learned that bodies on the surface of the earth...the practice, which I had before deemed useless." He then ascertained by experiment that " A difference in temperature of some magnitude was always observed,... | |
 | Robert Hunt - 1851 - 502 pages
...I thought them liable to be injured. But when I had learned that bodies on the surface of the 2u2 I earth become, during a still and serene night, colder...acquiring some precise information on this subject, I fixed perpendicularly, in the earth of a grass-plat, four small sticks ; and over their upper extremities,... | |
 | American Medical Association - 1853 - 930 pages
...attaining the temperature of the atmosphere, by which alone I thought them liable to be injured. But when I had learned that bodies on the surface of the earth...for the practice which I had before deemed useless." To obviate the uncomfortable and injurious effects of solar radiation during the day, an umbrella or... | |
 | 1854 - 534 pages
...injured ; but when I learnt that bodies on the surface of the earth become often colder than the air, by radiating their heat to the heavens, I perceived...acquiring some precise information on this subject, I fixed perpendicularly, iu the earth of a grass-plat, four small sticks, and over their upper extremities,... | |
 | 1854 - 720 pages
...injured ; but when I learnt that bodies on the surface of the earth become often colder than the air, by radiating their heat to the heavens, I perceived...acquiring some precise information on this subject, I fixed perpendicularly, in the earth of a grass-plat, four small sticks, and over their upper extremities,... | |
 | 1854 - 394 pages
...attaining the temperature of the atmosphere, by which alone I thought them liable to be injured. But when I had learned that bodies on the surface of the earth...atmosphere, by radiating their heat to the Heavens, [ perceived immediately a just reason for the practice which I had before deemed useless, lieing desirous,... | |
 | Robert Hunt - 1855 - 496 pages
...attaining the temperature of the atmosphere, by which alone I thought them liable to be injured. But when I had learned that bodies on the surface of the earth...acquiring some precise information on this subject, I fixed perpendicularly, in the earth of a grass-plat, four small sticks ; and over their upper extremities,... | |
 | 1858 - 396 pages
...attaining the temperature of the atmosphere, by which alone I thought them liable to be injured. But when I had learned that bodies on the surface of the earth...for the practice which I had before deemed useless." 1262. Dew forms in very different quantities, under the same circumstances, upon different materials;... | |
 | Charles Tomlinson - 1860 - 374 pages
...attaining the temperature of the atmosphere, by which alone I thought them liable to be injured. But when I had learned that bodies on the surface of the earth...for the practice which I had before deemed useless." Even a thin cambric handkerchief, or, as Patrick Wilson found, a piece of gauze, spread out and supported... | |
 | 1861 - 588 pages
...thought them liable to be injured. But when I had learned that bodies on the surface of the earth became, during a still and serene night, colder than the atmosphere,...useless. Being desirous, however, of acquiring some precis« information on the subject, I fixed perpendicularly in the earth of a grass-plot four small... | |
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... the means frequently employed by gardeners, to protect tender plants from cold, as it appeared to me impossible, that a thin mat, or any such flimsy substance, could prevent them from attaining the temperature of the atmosphere, by which alone I thought... 
