16 GENERAL OBSERVATIONS. 



Q. What is a third kind of contractility ? 



#. The contractility of texture from want of exten- 

 sion, as it appears in the muscles, skin, arteries, veins. 



Q. Where is this contractility of texture obscure? 



#. In the nerves, bones, and cartilages. 



Q. What is the fourth kind of contractility? 



t/?. The horny hardening. 



Q. There is yet another contractility? 



#. Yes, and a very important one; it is the insen&ible 

 organic contractility, which, by oscillation, forms the to- 

 nic forces, or tonicity. 



Of Animal Organization. 



Q. On what does the existence of the vital properties 

 depend ? 



/?. On organic arrangement, for when organization is 

 destroyed, the vital properties disappear. 



Q. What are animal bodies composed of? 



/?. An assemblage of organs. 



Q. What are organs composed of? 



Ji. Of several textures. 



Q. What are the elementary textures? 



*#. Twenty-one in number; the cellular, nervous of 

 animal life, nervous of organic life, arterial, venous, exha- 

 lent, absorbent, and glandular, osseous, medullary, cartila- 

 ginous, fibrous, fibro-cartilaginous, muscular of animal life, 

 muscular of organic life, mucous, serous, synovial, glan- 

 dular, dermoid, epidermoid, and the pilous. 



Q. In what do these textures differ? 



A. They differ in form; in their organization; in their 

 properties of life, as contractility and sensibility. 



