■ PC 
X 
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(I) 
Numb.i, 
PHILOSOPHICAL 
TRANSACTIONS. 
Munday , March 6. i66f. 
The Contents* 
Introduction to this trait. An Accompt of the Improvement of 
Optick Glafles at Rome. Of the Obfervation made in England, 
of a Spot in one of the Belts of the Planet Jupiter. Of the mo- 
tion of the late Comet predated. 7 he Heads of many NevoOb- 
fervations and Experiments , in order to an Experiment <*/Hilk> 
ry of Cold , together with fome Thermometrical Difcburfes and 
Experiments. A Relation of a very odd Monfrous Calf. Of 
* peculiar Lead-Ore in Germany 3 very ufeful for Ejjays . Of 
an Hungarian Bolus, of the fame ejfeff with the Bolus Armenus. 
Of the New American Whale-fijhing about the Bermudas. A Nar- 
rative concerni ng, the jucccf vf' the Pend ulum- watches at Sea 
for the Longitudes 3 and the Grant of a Patent thereupon . A 
Catalogue of the Philofophical Books publift by Monfieur de Fer- 
mat, CmnfeUour at Tholou lately dead • 
The Introduction . 
lereas there is nothing more neceflary for promo- 
ting the improvement of Philofophical Matters, 
than the communicating to fuch , as apply their 
Studies and Endeavors that way , Inch things as are 
difeovered or put in practice by others 3 It isu . : 
fore thought fit to employ the Prefs , as the moft proper way 
to gratifie thole, whofe engagement in fuch Studies, and d e light 
in the advancement of Learning and profitable Difooveries , 
doth entitle them to the knowledge of whut this Ki clom, or 
other parts of the World, do, from time to time, afford, as well 
A of 
