Numkt. 
PHILOSOPHICAL 
TRANS ACTION S. 
Munday^ April 1665. 
The Contents, 
Extraff of a Letter written from Rome^ concerning the late Co- 
metj and a New one. ExtraS of another Letter from Paris^ 
containing fame Reflexions on the precedent Roman Letter^ 
An Ohfervation concerning fame particulars 5 further confde- 
rahle in the MonfiGV. that was mention din the firjl Papers of 
thefe Philofophical Tranfaftions. ExtraU of a Letter written 
from^J tmz^ ^concerning the Mines ^Mercury in Friuly.^'^?^^ 
Obfervations 5 made in the ordering <?jf Silk- worms. _ An Ac- 
count of Mr, Hooks Micrographia^ or the Fhyfiological defcri- 
ptions ^Minute ^odics.made by Magnifying Glafles, 
ExtraU of a Letter^ lately written from Rome^ touching the 
late Cornet^ and a New one* 
Cannot enough wonder at the ftrange agreement 
of the thoughts of that acute French Gentlemanj 
Monfieur Auzont^ in the Eypothefis of the Comets 
motion^ with mine 5 and particularly 3 at that of 
the Tables. I have with the fame method^where- 
by I find the motion of this Cornet^ eafily found the Principle 
of that Author s Ephemerides^whlch he then thought not fit to 
declare 5 and *tis this^ that this Comet moves about the Great 
Dog^ In lb great a Circle ^ that that portion ^ which is deicri- 
C bed^ 
