170 PHILOSOPHICAL TRANSACTIONS. [aNNO I667. 



rivers, canals, plants, animals, fossils, architecture, towns, walls, turrets, 

 bells, printing, artillery, gunpowder, &c. &c. — Of their bells, one at Pekin 

 is said to weigh 120 thousand pounds. — Of their stupendous bridges, one is 

 360 perches long, and a perch and half broad : it is without any arch, standing 

 on 300 pillars, supporting very long and large stones laid over the tops of them. 

 Another is built from one mountain to another, of one vast arch only ; being 

 400 cubits long, and 500 cubits high from the surface of the river running 

 under it. The description and figure of this bridge are given by Perhault, as 

 well as in this place, as exhibited in our plate 5, fig. 1 . — The Chinese wall, said 

 to be built 215 years before Christ, is described as of 300 German miles in 

 length, 30 cubits high, and from 12 to 15 cubits in breadth ; so that several 

 horses could go abreast upon it. A part of it is exhibited pi. 5, fig. 2. 



An Advertiseinent concerning the Invention of the Transfusion of Blood. 

 By Mr. Oldenburg. N' 27, p. 489- 



The purport of this advertisement is to show that the transfusion of blood 

 originated in the suggestions of some ingenious members of the Royal Society, 

 several years before it was tried in foreign countries ; and that in England it 

 was first put in practice by Dr. Lower, and afterwards by Dr. King. 



An Account of some Experiments of injecting Liquors into the Veins of 

 Animals. By Signior Fracassati, Professor of Anatomy at Pisa. 

 N" 27, p' 490. 



1 . Having infused into the jugular and crural vein of a dog some aquafortis 

 diluted, the animal died presently ; and being opened, all the blood in the 

 vessels was coagulated. The great vessels were burst. 



2. Into the veins of another dog some spirit of vitriol was infused, which 

 had not so immediate an effect, for the animal suffered a great while, and 

 foamed like epileptics, having its respiration very thick. After death, his blood 

 was found coagulated and grumous, resembling soot. 



3. Into the veins of another dog was injected some oil of sulphur; but he 

 did not die, though this infusion was several times tried upon him. The wound 

 being closed and the dog let go, he fell to gnawing some bones which he 

 found, with great avidity, as if this liquor had caused in him a great appetite. 



4. Another dog, into whose veins some oil of tartar was injected,- did not 

 escape so well : for he suffered much, and after being greatly swoln died. 

 Being opened, the spectators were surprised • to find his blood not curdled ; 

 but on the contrary more thin and fluid than ordinary. 



