i5lS^ ) 
diirers remarqaabte Obfemrfans concerning them^ and; 
giving a Caution withall,to be ufed in Jiidgingdf the Qjaa^ 
lities pf Winds. Here alfo Gome in his remarques concero- 
ing Hi^ and Cold Winds, and the examination of their 
Gaufes ^ conduding this Head not only with obferving 
fome Vnu/ual Q^^lims of Wind,an «^the different odd to- 
preffions they make upon other Bodies 5 but alfo 
delivering fome propofals, for a more accurate Difcove» 
ry of the Nature and Qualities of Winds, in relation to 
NavigatioHj Archicedure^and feveral Trades and Mecha- 
nical Arts. 
12. He inquires into the Frogmflicki of Winds^fromTfte 
different Appearances of the Celeftial Bodies, from the 
Roaring of the Sea, the Refounding of Echo's, the pecu- 
liar Adioosor Paffions of ^ome Living creatures^ &c. 
I?. He fubjoins an Hiftorical account concerning 
wW/ io genera!^ zndL Tomados^ Hurricms^znd. other Tem- 
peftoous Winds r concerning which he delivers feveral 
uncommon anci very remarkable Relations. 
As ro the whole matter. He is v/ell aware, that it Will 
be hard to lay down any perfedl ThcBry. of Winds , in re? 
fard that the great Inequalities in the Superficies of the 
;artlrf thre feveral Obftacles and iR^Bpercuffiom {vom moun" 
tains ; the different Situations of the places and M^irwm/ 
in which they blow 3 the Diftance of thofe Countries from 
the Poles of the World 5 their Re/peBs to the Gourfe of the 
sm, whether they comply wiih^ or refift, the ISlafural 
Motion of the Air from Eaft to Wefl, &:c ; have many in- 
tricate and nice fpeculations, not eafie to be ftatcd. 
II, Deux Machines prepres a fair e ks Quadraas, avec tm^ 
grandefadlite 'j par k ?♦ Iguace GaftoH Pardies S. J. ^: 
Paris 16^^^ in i2', 
^^T^He teamed AutborjProfeffor of the Mathematiqiies 
X in the Parifian College of Clermont^ having founds 
that the difficufty^ met with in the FrMia\ of Pyallin^:fl^^ 
in 
