( 4J° ) 
Claudius Amy and, Efqrs. Serjeant Surgeons to his 
Majefty, and divided into three Parts. 
In the firft our Author treats of Mortifications in ge- 
neral, from Pag. i to the 6th. What he fays upon this 
Head is collected from fome of the raoft experienced 
Phyficians and Surgeons, who all affirm, that a Mortifi- 
cation from an internal Caufe is always incurable ; 
and when it proceeds from an external one, it can 
never be cured but by Amputation, or feparating the 
Part affected from the Sound. 
In the fecond Part he gives a very remarkable Ob- 
fervation of his own, which proves to a Demonftra- 
tion, that a Gangrene, even from an ill Habit of Bo- 
dy, may be cured, contrary to the hitherto received 
Opinion. 
In the third Part, which begins at the 30th Page, 
he makes fome Remarks on the prefent Cafe, and adds 
Come parallel Obfervations from Mr. Rujhworth , a 
Surgeon in Northampton , who had the good For- 
tune of making the firft Difcovery of the great and 
furpriling Effects of the Peruvian Bark in checking 
the Progrefs of Mortifications, which he fays has been 
likewife confirmed by the repeated Obfervations of 
that incomparable Surgeon Mr. Serjeant Amyand , 
who had often ufed the fame Medicine, in the fame 
Cafe, and with the fame Succefs with Mr. Rujb- 
<voorth. 
Our Author fays further in this Place, that it is 
only by taking off the Fever that the Bark produces 
all thefe good Effects. But to return to the Obfer- 
vation itfelf, which he has given us with a great deal 
of Judgment and Accuracy from Page the 6th to 
Page 
