. The comparative physiology of respiratory mechanisms. Respiration. 58 RESPIRATORY MECHANISMS strated the absence of cutaneous respiration. Hazelhoff (1926) showed on a number of spiders, and Fraenkel on a scorpion. Fig. 33. Abdomen with tracheae of Heliophanes cupreus. (Lamy.) (Buthus), that the spiracles remain almost closed when the animal is at rest and the temperature not too high, thereby. 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 comparative physiology of respiratory mechanisms. Respiration. 58 RESPIRATORY MECHANISMS strated the absence of cutaneous respiration. Hazelhoff (1926) showed on a number of spiders, and Fraenkel on a scorpion. Fig. 33. Abdomen with tracheae of Heliophanes cupreus. (Lamy.) (Buthus), that the spiracles remain almost closed when the animal is at rest and the temperature not too high, thereby. 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 Krogh, August, 1874-1949. Philadelphia, University of Pennsylvania press
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