Note 4 — XXII TADPOLES AND FROGS

I am told by Mr. Boulenger, of the Natural History Museum, who is the greatest authority on these animals, that the explanation of this is that unawares Dr. Edwards made use of the young tadpoles of the obstetric toad (Alytes), which is very common near Paris, though it does not occur in England. These tadpoles regularly grow to be three inches and more in length (see Fig. 44 B). Dr. Edwards thought he had used the tadpoles of the common frog, but had, by accident, got hold of those of Alytes.