A General View of the Natural History of the Atmosphere: And of Its Connection with the Sciences of Medicine and Agriculture; Including an Essay on the Causes of Epidemical Diseases, Volum 1

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Abernethy & Walker, 1808 - 406 pàgines
 

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Pàgina 302 - ... majestic slowness ; at intervals we thought they were coming in a very few minutes to overwhelm us; and small quantities of sand did actually more than once reach us. Again they would retreat so as to be almost out of sight, their tops reaching to the very clouds.
Pàgina 296 - I saw from the south-east a haze come, in colour like the purple part of the rainbow, but not so compressed or thick. It did not occupy twenty yards in breadth, and was about twelve feet high from the ground. It was a kind of blush...
Pàgina 303 - Eleven of them ranged alongside of us about the distance of three miles. The greatest diameter of the largest appeared to me at that distance as if it would measure ten feet. They retired from us with a wind at...
Pàgina 296 - I scarce could turn to fall upon the ground with my head to the northward, when I felt the heat of its current plainly upon my face. We all lay flat on the ground, as if dead, till Idris told us it was blown over. The meteor, or purple haze, which I saw, was indeed passed, but the light air that still blew was of heat to threaten suffocation.
Pàgina 302 - We were here at once surprised and terrified by a sight surely one of the most magnificent in the world. In that vast expanse of desert, from W. and to NW of us, we saw a number of prodigious pillars of sand at different distances, at times moving with great celerity, at others stalking on with a majestic slowness ; at intervals we thought they were coming in a very few minutes to overwhelm us ; and small quantities...
Pàgina 303 - The same appearance of moving pillars of sand presented themselves to us this day, in form and disposition like those we had seen at Waadi Halboub, only they seemed to be more in number and less in size. They came several times in a direction close upon us ; that is, I believe, within less than two miles. They began immediately after sunrise like a thick wood, and almost darkened the sun. His rays shining through them for near an hour, gave them an appearance of pillars of fire.
Pàgina 303 - They retired from us with a wind at south-east, leaving an impression upon my mind to which I can give no name, though surely one ingredient in it was fear, with a considerable deal of wonder and astonishment. It was in vain to think of flying. The swiftest horse, or fastest sailing ship, could be of no use to carry us out of this danger, and the full persuasion of this riveted me as if to the spot where I stood...
Pàgina 412 - A | TREATISE | ON THE | DISEASES OF CHILDREN. | WITH DIRECTIONS | FOR | THE MANAGEMENT OF INFANTS | FROM THE BIRTH.
Pàgina 165 - Both heats and colds are become much more moderate within the memory even of the middle-aged. Snows are less frequent and less deep. They do not often lie, below the mountains, more than one, two, or three days, and very rarely a week.
Pàgina 296 - ... fall upon the ground with my head to the northward, when I felt the heat of its current plainly upon my face. We all lay flat on the ground, as if dead, till Idris told us it was blown over. The meteor, or purple haze, which I saw, was indeed passed, but the light air that still blew was of heat to threaten suffocation. For my part, I found distinctly in my breast that I had imbibed a part of it, nor was I free of an asthmatic sensation till I had been some months in Italy, at the baths of Poretta,...

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