618 THE PHILOSOPHY 



* the conveyance of gl^e, do we not find, that this very maU 



* ter is feparated by the exhalant branches of the arteries of 



< the peritoneum, pleurae, and other fhut facs, and univerfaU 

 « ly, by the branches of the arteries of the cellular mem- 



< brane ? The kinds of matter neceffary for the growth and 



< nourifhment of our feveral organs are fo various and differ- 



* ent in their nature, that it is altogether incredible they 

 f can be furnifhed by the nerves : Thus, water is needed for 



* the extenfion of the fore-part of the eye, vifcid matter for 

 f the cryftaUine and vitreous humours, earth for the growth 



< of the bones ; Sec. ; whereas we can as ealily conceive 



< thefe to be/urniflied by the arteries, as that, in one place, 

 f they fhould furnifli faliva, in another bile, &c. As the 

 f wafte of the feveral organs is carried off by the veffels, 

 f either circulating or abforbent, why fliould we doubt that 

 f the circulating fluids can add a particle in the place of one 

 ? that has been carried off, or that an artery can fupply what 

 ^ has been abforbed by a lymphatic vein ? As it is granted 

 f that the fecretion of all other kinds of matter in the bodies 

 f of animals is performed by the branches of the arteries, is 



< it not incredible that there fhould be an exception to the 

 f general rule in the fecretion of the nourifhment ? Surely 

 f that power which can convert the food into blood, and 



* can change the blood into bile and faliva, is fufficient to 

 f convert it into nourifhment. 



< I will now add,' continues our author, < that in calli^ 



* cicatrices, or accretions, there are numberlefs new formed 



* veffels filled, in the living animal, with red blood, and which 



* can readily be inje£led. Nay, I found by experiment, 



< that fuch new formed veffels, produced by the oppofite 



* fides of a wound, unite into continued canals, or anaflamofe. 



* If, then, in a callus, new earthy or offeous fibres, and new 



* veffels, can be formed by the original arteries, mufl we 

 f not believe that the wafte of this earth, and of thefe veffels^ 



