[4] In a subsequent part of this work, the author defines _appareil_, which I have translated by the word _apparatus_, to be an assemblage of many systems. It will be perceived that the English word in this and some other instances is in the plural number. I should certainly have preferred some other term more conformable to the idiom of our own language if I had known any one that would so well have conveyed the sense of the author. _Tr._ SECTION II. ┌1st. Of the properties of texture. │ │2d. Division of the ┌Extensibility. │ properties of texture. └Contractility. ┌1st. By want of extension. │ └2d. By horny hardening. └3d. Characters of the properties of texture. GENERAL OBSERVATIONS UPON LIFE. SECTION I. ┌1st. Of life and its functions. │ ┌Of those relating ┌Animal functions. │ │to the individual. └Organic functions. │ │ │2d. Classification of │ ┌Functions of the male. │ functions │Of those relating │Functions of the female. │ └to the species. │Functions relating to the │ │ union of the sexes, and │ └ the product of this union. │ │3d. Of the differences and relations that exist between the two classes │ of functions. │4th. Of the differences and relations that exist between the two orders │ of the first class. │5th. Of the differences and relations that exist between the three orders └ of the first class.