. Elementary text-book of zoology. Zoology. 68 ORGANIZATION AND DEVELOPMENT OF ANIMALS IN GENERAL. acid (and water). The exchange of these two gases between the blood and the external medium is the essential part of the respiratory process, and is effected through organs which are suited for carrying on this process either in air or in water. In the simplest cases the exchange of these two gases takes place through the general surface of the body; and in all cases, even when special respira- tory organs are present, the outer skin also takes part in Please note that these images
. Elementary text-book of zoology. Zoology. 68 ORGANIZATION AND DEVELOPMENT OF ANIMALS IN GENERAL. acid (and water). The exchange of these two gases between the blood and the external medium is the essential part of the respiratory process, and is effected through organs which are suited for carrying on this process either in air or in water. In the simplest cases the exchange of these two gases takes place through the general surface of the body; and in all cases, even when special respira- tory organs are present, the outer skin also takes part in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. New York : Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
