fotltJWt planes &c, Soiiie Hygroftatical Experiments^ 
together with the defcription of the Inftriiments by 
which they were performed. 
Rewrites of long Siphons^ and their ufe in convey- 
ing Water i ofGlafs Bubbles, and the reafon of their fly- 
ing all into little peices upon breaking; of Water-Fots^ 
lort oi Lamps ; and of Stent or eophonic Tubes; the 
invention of which he juftly afcribes to Sr. Samuel 
Morlandy looking on that Inftrnment of which IQreher 
makes mention, to be of a different fliape from thefe. 
He fpeaks of a new fort o£ Thermofcope, of the M^^- 
deburg Hemifphsres, mentioned by Guerick^y and the 
difHculty of feparating one from the other, when the 
-^/r included in them is ratified. 
He difcourfes of the force of breath blown into a 
Bladder, and raifing a confiderable weight annext : and 
of the explaining mufcolar motion from this principle, 
after Dr. ^'ro^?;2's manner, propofing that by thefe means 
a flatue of a man may be made to move in imitation 
of Nature. 
He examines the experiment of the Hydria HeU 
montiana, urged by Dr. ^lorg as an argument for his 
Hylar chic Vx'mci^lQ. 
Hej defcribes 2<xx Aerometer , confifting of an Hygro-- 
meter ^Thermometer, and Barometer. Speaking of mag- 
neticai Experiments, he affirms, that he has a large 
Needle, exceeding a J{hmland foot, and feven inches, 
both ends of which apply to either Pole o( the Magnet, 
To this Treatife the -<^^^^ar liibjoyns an Epiftle to 
Dr. More .of Cambridg , concerning his Hylarchic Prin- 
ciple 3 where he examines the D " Demonftrations of 
that Principle; and anfwers the arguments againlt the 
Elaiticity of the Air, ^ 
G g g a OphthaU 
