( ^ ) 'Mumkh 
PHILOSOPHICAL 
TRANSACTIONS. 
Munday^ March 6. 166* 
The Contents* 
Jn IntrodttBion to this traB, An Accempt of the ImprGVemefit of 
Optick Glafles at Rome. Of the obfervation made in Eoglandj, 
of a Spot in one of the Belts of the Planet Jupiter. Of the mo- 
tion of the late Comet pr^ediBed. The Heads of many New Oh- 
fervations and Experiments ^ in order to an ExperimentalliiAo-^ 
ry of Cold 5 together withJomeThevmomQtnc^l Dijcourjes and 
Experiments. A Relation of a very oddMonfirons Calf. Cf 
d /e<r/^//iir Lead-Ore Germany 3 very ufeful for Effkys. Of 
^« Hungarian Bolusj of the fame effeBwiththe^olmhimQnm. 
Of the Nen> American Whalefijbing about the Bermudas. A Nar^ 
rative concerning the fnccefs of the Pendulum-watches at Sea 
for the Longitudes 5 and the Grant of a Patent thereupon, A 
Catalogue of the Philofophical Books publiflit by Monfieur de Fer« 
mzt^CounfeUonr atlL)\o\o\i{t^lateiydead. 
The Introdu^ion. 
Hereas there is nothing more neceflary for promo- 
ting the improvement of Philofophical Matters , 
than the communicating to fuch 3 as apply their 
Studies and En^deavors that way g fuch things as are 
difcovered or put in practice by others 5 It is there- 
fore thought fit to employ the Trefs 3 as the moft proper way 
togratifiethoftj whofe engagement in ftich StudieSj and delight 
ki the advancement of Learning and profitable Difcovcries ^ 
doth entitle them to the knowledge of what this Kingdom^ or 
other parts of the World^ do^ from time to ti^ne^ afford^ as well 
A of 
