 | Alexander von Humboldt - 1822
...phenomena of life are modified by a great number of causes, the most powerful of which escape our senses, t We see diseases arise wherever organized substances,...conjecture some of the conditions under which the gaseous emanations which are designated * A dog is asphyxiated in an air containing two thousand parts... | |
 | Charles Darwin - 1846 - عدد الصفحات: 716
...perfectly healthy. Humboldt has observed, that, " under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena,...which raises the temperature of the ambient air."* On the coast of Peru, however, the temperature is not hot to any excessive degree, and perhaps, in... | |
 | Charles Darwin - 1871 - عدد الصفحات: 546
..." under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Yera Cruz and Carthagena, with an arid and sandy soil, which raises the temperature of the ambient air."* On the coast of Peru, however, the temperature is not hot to any excessive degree ; and perhaps inconsequence,... | |
 | Charles Darwin - 1876 - عدد الصفحات: 586
...perfectly healthy. Humboldt has observed, that, " under the torrid /one, tte smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena, with an arid and sandy soil, wliicb raises the temperature of the ambient air."* On the coast of Peru, however, the temperature... | |
 | Charles Darwin - 1889 - عدد الصفحات: 628
...perfectly healthy. Ilumboldt has observed that, " under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena, with an arid and sandy soil, which ANARCHY IN PERU. 441 raises the temperature of the ambient air."* On the coast of Peru, however, the... | |
 | Francis Albert Rollo Russell - 1892 - عدد الصفحات: 526
...perfectly healthy. Humboldt has observed that " in the torrid zone the smallest marshes are the most dangerous, being surrounded — as at Vera Cruz and...which raises the temperature of the ambient air." This is a pointed observation, and we may understand that small pools or the edges of marshes or sandy... | |
 | Andrew Davidson - 1892 - عدد الصفحات: 546
...less unhealthy, upon the 1 " Under the torrid zone, the smallest marshes are the most dangerous, heing surrounded, as at Vera Cruz and Carthagena, with an...soil, which raises the temperature of the ambient air " (Humboldt, Poltl. Essay on Kingdom of Ntw Spain, vol. iv. p. 199). 3 Jourdanet, Le Jlfexique et I-Amtrique... | |
 | Charles Darwin - 1896 - عدد الصفحات: 542
...perfectly healthy. Hmnboldt has observed, that, " under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena,...which raises the temperature of the ambient air."* On the coast of Peru, however, the temperature is not hot to any excessive degree; and perhaps inconsequence,... | |
 | Charles Darwin - 1908 - عدد الصفحات: 542
...perfectly healthy. Humboldt has observed. that, " under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena,...which raises the temperature of the ambient air." 1 On the coast of Peru, however, the temperature is not hot to any excessive degree; and perhaps in... | |
 | Charles Darwin - 1909 - عدد الصفحات: 564
...perfectly healthy. Humboldt has observed, that, " under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena,...soil, which raises the temperature of the ambient air."6 On the coast of Peru, however, the temperature is not hot to any excessive degree ; and perhaps... | |
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under the torrid zone, the smallest marshes are the most dangerous, being surrounded, as at Vera Cruz and Carthagena, with an arid and sandy soil, which raises the temperature of the ambient air... 
