Numb. 419. 
PHILOSOPHICAL 
TRANSACTIONS 
For the Months of June and July 1731. 
The CONTENTS. 
I. An Account of .Mr.James-Chriflopher LeBlon’r 
principles of Printing, in Imitation of Paint- 
ing, and of Weaving Tapeftry, in the fame 
manner as Brocades. By Cromwell Mor- 
timer, M. T>. P. S. Secret. 
II. A Letter to Dr. Jurin, F. p. S. giving an 
Account of the Condition of the Toum of Ha- 
flings, after it had been vifitcd by the Small 
Pox. 
III. A Catalogue of Eclipfes of the four Satel- 
lites of Jupiter, for the Tear 173 a. (By James 
Elodgfon, F.p.S . and Mafter of the Ppyal 
Mathematical School at Chrifl’s Hofpital, 
London. 
IV. A Letter to the Prefident of the Ppyal Society , 
from Frank Nicholls, M. T>. F. p. S. giving 
an' Account of a Polypus, refembling a (Branch 
of the Pulmonary Vein, coughed up by an 
aflhmatic Perfon. 
V. An 
