( ) 
VL M Account of Bocks, f* ]ac. Gaveti AcaJem. 
Mo?t{peL Aluvini Avenionenfis DolJ, Medici iy 
apud Camherienfes Pra^ici Nova Febris ld(it 
ceu ConjeHurit Phy/ic<x circa febris Naturar?i, 
Geneve^ 1700. m 8o. / 
T" Here is no Difeafe more frequent than Fev^, and 
yet there is none whofe nature is more dark and 
myfterious. - / _ 
Tlie Ancients declare all Fevers to be an unnatural 
heat firfl kindled in the Heart, and thence imparted by 
the Veins and Ai^teries to every part of the Body. Mofl 
of the celebrated Modern Writers fpeak of nothing but a 
Fermentation or Effervefcence of the Llood. But thefe 
accounts are infufficient, fince nothingnniore is affign'd 
than an Accident or General Caufe, notwi'thftanding 
the feveral fpecies of this Difeafe do fo much differ 
in their nature and appearances. The peculiar and infe- 
parable of Fevers is an unufual qaickaefs of Pulfe, as 
M, Giivct after Senmrtits^SylviH'^ ^tmidkr docs beli^ve.The 
true and -Natural Caufe of this will appear after fome 
previous refledions on the Circular Motion of the Heart 
and Arteries, and the manners of Secretion and pther 
Animal Operations. 
Not to repeat what is eoiumonly knovvn^ concerning 
the MuGcular ftrufture ot the Heart, and the Artifice of 
its Fibres, Valves, Tendons, c^^?. M. G^-z;^/, contrary to 
the opinion of former Writers, thinks the true Diajiole^ 
or Dilatation of the Heart happens at the ;time of itsDe- 
curtation, or wJien its^^/?i,x\ is dra ^,yn up to itsBafis, and 
irs Syjlole or Contradioo is during ks Elongation. If 
two Paralellograms have ^:rc|uar Perimeters or Circumfe- 
fences, as fuppofe 40 mches for inftance, that whofe 
fides, or length and breadth are equal, contains the 
greateft Area^ and that whofe length and breadth differ 
moft. 
