(^79) Numk 128. 
PHILOSOPHICAL 
TRANSACTIONS, 
Seftemb. 25. 1 676. for the Months of Jugujl and September. 
The CONTENTS. 
^ Dtfcriptm of an Hjdraul/que Engw^ communicated to the 
Tuhlifher of the Journal des Sea-vans, from the Regijler of the 
Royal Academy of the Sciences of Paris Signor CalTini j Adver- 
tifemtnts to Jfironomers about the Confguratiom by him given of 
Satelliitesof ]w^\itt^ for th^. years 1676, and 1677, inorder 
to veri^e their Theory. A Dire^ and Geometrical Method for 
finding the jtphelions^ Eccentricities and Proportions of the Orbes 
of the primary Vianet s, mthout fuppojing the Equality of the Angle 
of Motion at the other Focus of the Planets Ell ipfi^ by Mr. Ed- 
mund Halley Jm. Several Accounts concerning fome Spots nerv^ 
ly feeninthe Sun. A remarkable Objervation of Suurn, An 
Intimation of a fun and eafie way to work all forts of great tele- 
fiopic Glaffes; together wtth a generom offer of furntfhing indu^ 
firious jifironomers with them A Letter from Liege con- 
cerning NewtonV Experiment of the coloured Spe* 
Grum ; together with fome Exceptions ^gainji his the4>ry 
of Light and Colors. ejW^. NewtonV Anfwer to that Letter. 
^ Jn Account of two Books : L traCtatta de VE NtRlCU- 
LO & INTESTINIS , nec mn de FARTIBUS CO Nth 
NEmiBUSin genere,& in ffecie de Partibm ABDOMINIS', 
Auth. Franc. GliflTonio, M D, d^c. IL PHJRMACOPEE 
Royale, GALENl^UE & CHXMl^UE, par Moyfe Charas. 
A Defcription of an Hydraulique Engin , tal^en out of the Re- 
gifter of the Royal Academy of the Sciences ofVms^and infer ted if$ 
Journal des ScavanS5T675; Englifhed by the Publifber^for the 
better Examination of thofe that are skilfull in fuch Engins here 
in England^ See Tab. i . Fig, i . 
THE EfFeft of this Engin is, to throw out water to a great 
diftance, and to what place you will, by the Compreflion of 
Vvvv the 
