Numb. 377. 
PHILOSOPHICAL 
TRANSACTIONS. 
For the Months of May and June. 17x3. 
The CONTENTS. 
I. A Letter from Dr. George Mackenzie, to 
Sir Hans Slbane, ^ Coll. Med. Lond. DrdeJ. 
concerning the Coa'ti Monidi o/BrafiL ' 
•Ml. . . ' » 
II. Iniher Calculorum inter aquarum Pyrmontana- 
rum ufum in Viro, nunquam antehac calculum 
* expertOy ac alias perfeCte fanOy fuhjequente pojlea 
miflu cruentOy tandemque "Veficai ulcere. Comrnu^ 
• nicanteViro Clarijjimo AbrahamoVatero, M D. 
Anat. O* Dot an. Dr of. Wictemb. D(. S. S. 
\ 
Ohferyations upon diffeCting the Dody of a Der* 
Jon troubled with the Stone. Dy Dr. Perroc 
Williams, Dhyfician at Haverford^Weft in 
South-Wales. 
‘IV. Hijloria SeSiionis Viri ex D(enum Calculo de^ 
funCli. Ex Epiftold Viri DoEiiJJhni P. Hardif- 
- *^way, M. D. ad Gulielmum Stukeley, M. D. 
Coll. Med, Lond. (^g. Soc. Soc. 
Dd d 
V. An 
