{909) 
the Place, that gives the Dimenfions of the Surfaces of the So- 
lids of the Cycloid about the ^^/e,it mnft be I, that muft tell the 
World fo 9 as well as the other Wonders of your New Analjfts^ 
and fo many other things^ which you have done mt the honor to 
impart unto me, with that goodnefs yoa are pleased to have fot 
me, &c. 
The Book here commended is the Second Edition of the 
Mefolak of this Excellent Geometer, our Author 5 Concerning 
whofe firft Edition thus faith Stefhano Angeli pag. 217. Accef- 
ftonk dd Stereometriam dr Mechanicen. Quomodo autem hnjuf- 
medi Prohlemata Solids conflruantUT) edo^um fuit aquam fluri- 
mis 5 fed Herculeas met as in infinitum tranfccndit NMifsimm 
cUri\simus Geometra Renatus Francifcus Slufius LeodienfiS^ in 
[m admirabili Mefolaho^ in quo hacinfimtis e nude at modis. 
Concerning this Book, we find it to be the judgement here, 
(and doubtlefs it will have the Cme efteem elfev^here among the 
Learned) that in it there is the moft excellent Advancement 
made in this kind of Geometry^ fince the famous Mathematician 
and Philofopher Bes Cartes. 
II. TraBatus de CO%T>E*^ item de mo^ 
A, Richardo Lower , M. D. Londini in So, impenfis Jacobi 
Alleftry, 1669» 
''T^He Learned Author of this Treatifc ( a Member of the 
X ^&ciety ) confidering w ith himfelf, how important ic 
was, for the attaining a full knowledge of the Nature and Qua- 
lities of the Bloody to rnveftigate, befides the Circular Motion 
thereof, the Origin sind Celerity of that Motion^ an.d the various 
Changes thereof;, together with the Caufesoi them 5 as alfo, to 
make an eflimate of the Quantity of that Liquor emitted at 
every Pulfation^ thought it very well worth while, to give,from 
his own beft Obfervations, a clear and particular account of that 
whole matter. And for as much as he conceives, tliat the Mo- 
tion oi the depends on that of the He4r/-, he begins with a 
Difcourfe concerning the Situation and StruiJure of the Hearty to 
M m mm ihew. 
