O E THE EXTERNAL SENSE S. 3o5

the mother in order to fade. In doing this theyare evidently direded by the Smell . The Smellappears either to excite the appetite for the pro-per food, or at lealt to direct the new-born ani-mal to the place where that food is to be found.It may perhaps do both the one and the other.

That when the ftomach is empty, the Smellof agreeable food excites and irritates the appe-tite, is what tve all mult have frequently expe-rienced. But the ftomach of every new-born ani-mal is neceffarily empty. While in the womb itis nourillied, not by the mouth, but by the na-vel-ftring. Children have been born apparentlyin the moft perfect health and vigor, and haveapplied to fuck in the ufual manner; but imme-diately , or foon after, have thrown up the milk,and in the courfe of a few hours have died vo-miting and in convuliions. Upon opening theirbodies it has been found that the inteftinal tubeor canal had never been opened or pierced inthe whole extent of its length; but, likeafack,admitted of no paffage beyond a particular place.It could not have been in any refped by themouth, therefore, but altogether by the navel-ftring, thatfuch children had been nourillied andfed up to the degree of health and vigor in whichthey were born. Every animal, while in thewomb, feems to draw its nourilhment, more likea vegetable, from the root, than like an animalfrom the mouth; and that nourilhment feems tobe conveyed to all the different parts of the bo-dy by tubes and canals in many refpeffs different