OF NATURAL HISTORY. 313 



* I will now add,' continues our author, ' that in calli, cicatrices, 

 or accretions, there are numberlefs new formed veflels filled, in 

 the living animal, with red blood, and which can readily be injec- 

 ted. Nay, I found by experiment, that fuch new formed veflels, 

 produced by the oppofite fides of a wound, unite into continued 

 canals, or anaftamofe. — If, then, in a callus, new earthy or offeous 

 fibres, and new veflels, can be formed by the original arteries, mufl: 

 we not believe that the wafte of this earth, and of thefe veflels, 

 can be ever after fupplied by the arteries which formed them ? If 

 fo, are we not to conclude, that the wafte of other arteries, and of 

 other organs, is fupplied in the fame manner from the arteries ? If 

 the quantity of blood naturally circulating through a limb be dimi- 

 nifhed, as by tying the trunk of the brachial artery, in the opera- 

 tion for an aneurifm, the arm lofes part of its ftrength and fize ; 

 but the lofs is lefs than, at firft fight, might be expeded ; becaufe 

 the anaftomofing (or uniting) canals foon come to be greatly en- 

 larged. 



* Upon the whole,' the Dodor concludes, ' there are few points 

 in phyfiology fo clear, as, i. That the arteries prepare, and dired- 

 ly fecrete the nourifliment in all our organs; and, 2. That the 

 nerves do not contain nor condud the nourilhment, but, by 

 enabling the arteries to ad properly, contribute indiredly to nutri- 

 tion.' 



The ingenious Charles Bonnet endeavours to fhow, that the parts 

 of all organifed bodies are contained, in miniature, in germs or buds ; 

 that thefe germs, when placed in .proper fituations, gradually unfold 

 and increafe in magnitude; that the various members of animals and 

 vegetables are expanded, both longitudinally and laterally, by food 

 adapted to their refpedive natures ; and that every germ adually. 



includes 



