. Biology in America. Biology. The Living Machine 291 stren^; The results of his entire series of experiments led Chittenden to the conclusion that: ''These experiments on the influence of a low proteid diet on dogs, as a type of high proteid consumers, taken in their entirety, afford con- vincing proof that such animals can live and thrive on amounts of proteid and non-nitrogenous food far below the (usual) standards. . The deleterious results reported by these in- vestigators were not due to the effects of low proteid or to diminished consumption of non-nitrogenous foods, but are to b
. Biology in America. Biology. The Living Machine 291 stren^; The results of his entire series of experiments led Chittenden to the conclusion that: ''These experiments on the influence of a low proteid diet on dogs, as a type of high proteid consumers, taken in their entirety, afford con- vincing proof that such animals can live and thrive on amounts of proteid and non-nitrogenous food far below the (usual) standards. . The deleterious results reported by these in- vestigators were not due to the effects of low proteid or to diminished consumption of non-nitrogenous foods, but are to be ascribed mainly to non-hygienic conditions, or to a lack of care and physiological good sense in the prescription of a narrow dietary not suited to the habits and needs of this. Effect of Diet on Dogs Left—A dog fed on a diet containing one-half pound of meat daily. Eight—The same animal after several months on a diet with less than half as much meat. From Chittenden, "The Nutrition of ; By permission of F. A. Stokes Company. class of animals. Further, it is obvious that the more or less broad deductions so frequently drawn from . . experiments (on dogs) . . especially in their application to mankind, are entirely unwarranted and without foundation in fact. Our experiments offer satisfying proof that not only can dogs live on quantities of proteid food per day smaller than (are usually) . . deemed necessary, and with a fuel value far below the (usual) standard . . ; but, in addition, tliat these animals are quite able on such a diet to gain in body-weight . . , thereby indicating that even small quantities of food might suffice to meet their true physiological requirements. "The results of these experiments with dogs, which we. 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 Young, R
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