"Instead of a verbal answer, therefore, I carried the young man himself to the King, that his Majesty might with his own eyes behold this wonderful case: that, in a man alive and well, he might without detriment to the individual, observe the movement of the heart, and with his own hand even touch the ventricles as they contracted. And his most excellent Majesty, as well as myself, acknowledged that the heart was without the sense of touch: for the youth never knew when we touched his heart, except by the sight or sensation he had through the external integument. "We also particularly observed the movements of the heart, viz., that in the diastole it was retracted and withdrawn: whilst in the systole it emerged and protruded: and the systole of the heart took place at the moment the diastole or pulse in the wrist was perceived; to conclude, the heart struck the walls of the chest and became prominent at the time it bounded upwards and underwent contraction on itself." Harvey's powers of observation were particularly brought into play in connection with his experiments on the development of the chick. He fully appreciated the method of Zadig, for he says that "different hens lay eggs that differ much in respect of size and figure, some habitually lay more oblong, others rounder eggs that do not differ greatly from one another: and although I sometimes found diversities in the eggs of the same fowl, these were still so trifling in amount that they would have escaped any other than the practised eye ... so that I myself, without much experience, could readily tell which hen in a small flock had laid a given egg and that they who have given much attention to the point of course succeed much better. But that which we note every day among huntsmen is far more remarkable: for the more careful keepers who have large herds of stags or fallow deer under their charge, will very certainly tell to which herd the horns they find in the woods or thickets belonged. A stupid and uneducated shepherd, having the charge of a numerous flock of sheep, has been known to become so familiar with the physiognomy of each, that if any one had strayed from the flock though he could not count them, he could still say which one it was, give the particulars as to where it had been bought or whence it had come. The master of this man for the sake of trying him, once selected a particular lamb from among forty others in the same pen and desired him to carry it to the ewe which was its dam, which he did forthwith. We have known huntsmen who having only once seen a particular stag or his horns or even his print in the mud (as a lion is known by his claws) have afterwards been able to distinguish him by the same marks from every other. Some, too, from the footprints of deer, seen for the first time, will draw inferences as to the size and grease and power of the stag which has left them: saying whether he were full of strength or weary from having been