SINOPSIS DEL LIBRO

It seems to the author that three kinds of work should be included in the elementary study of zoology These three kinds are a observations in the field covering the habits and behavior of animals and their relations to their physical surroundings to plants and to each other b work in the laboratory consisting of the study of animal structure by dissection and the observation of live specimens in cages and aquaria and c work in the recitation- or ...Seguir leyendo