586 PHILOSOPHICAL TRANSACTIONS. [aNNO 1722. 



it into the crural vein of a dog ; but the end of the syringe being too large to 

 enter the vein, the experiment did not succeed. 



On this I laid some of the infected blood on the wound, and covered it with 

 a dressing, which the dog got off in the night. I found the next morning that 

 the dog had licked his wound, and that he refused his food. Towards night he 

 began to moan, and gave signs of an approaching death. The next morning I 

 found him dead, the wound being considerably swelled and gangrened, and the 

 edges round the swelling likewise gangrened. 



On opening the body, we found the liver something larger than usual, with 

 spots of a livid purple, as in the bodies of persons dead of the plague. In the 

 stomach was found a quantity of black coagulated blood, of the size of a hen's 

 egg. This in all likelihood was what he had swallowed on licking the wound. 

 The heart was very large, with a black grumous blood in the ventricles, and 

 the auricles were turned blackish and gangrenous. 



Extract of a Letter from Dr. Deidier, concerning an Experiment made with the 

 Bile of Persons dead of the Plague. Communicated by Dr. Woodivard. 

 N°372, p. 105. 



We caused two dogs to swallow a pretty large quantity of the bile taken from 

 the bodies of persons dead of the plague. On this the dogs appeared heavy 

 and melancholy, refused their food, and made water very often, especially when 

 they were any ways disturbed. Their urine was thick and very fetid, and their 

 gross excrements were tinged with the black and greenish bile which they had 

 swallowed. But in a few days those accidents went off, and the dogs recovered 

 their perfect health. 



Solution of the Problem, of finding Curves^ which may cut each other in a Given 



Angle. N''372, p. 106. , j,.,,. 



This solution is anonymous: but it seems it was given by Dr. Henry Pember- 

 ton, as we are informed by Dr. James Wilson, in his account of the life of Dr. 

 Pemberton, prefixed to his edition of the Doctor's Lectures on Chemistry at 

 Gresham college. 



This was the noted problem proposed by M. Leibnitz and M. John Bernoulli, 

 to the English mathematicians, which had before occasioned several controvert 

 sial writings. But as we have already inserted some other solutions of it in 

 these Abridgments, viz. by Sir L Newton, Dr. Taylor, &c. it is quite unneces- 

 sary to abstract the present one also. 



