Page:Popular Science Monthly Volume 50.djvu/828

806 fear, this cringing and trembling like a Chinese culprit before his executioner. (See Figs. 15, 16, and 17. )

Some may contend that the dogs were not comparable in the first place. This, of course, is possible, but I do not feel that in this respect the experiment could have been improved upon. The



presumption is, in fact, very strong against any such interpretation of the facts.

I can conceive of no other interpretation than the evident one, viz., that we have to do here with one of the physiological causes