( 6i28 ) 
receis of the igoeous corpufcles, or the impartlog of the eir- 
craoeous agitation to the Air or other contiguous bodies, the 
Stqne or Water^&c* will agaia have fo much fainter an agita- 
tion, thad that of a man*s Senfory , as to be by him judged 
Cold^ And if this already impaired agitation be (lill more 
and more Icflen'd, the Body will ftill grow colder and cold- 
er without the help of any ?$jinve caufe • till at length the 
agil parts, that kept ic warm or fluid, being quite expelled 
or difabled, the form of the X\c\noTyfor example^ comes to be 
exchanged for that of Ice. 
Several confiderable Experiments oiMx, Vioyles being in this 
Difcourfe occafiooally refer'd to , one of the Interlocutors 
mentioDs not only the particular fcruples, but alfo divers phs- 
nomena of Experiments, that kept the fa-me Gentleniaafrom 
declaring himfelf about the Niture and Caufg of Gold* 
To this Dialogue are annexed three fmall pieces by Mr. 
The firji contains two Prohlems about Cold^ grounded on 
New Experiments ; whereof one is, Hosp upon the mixture of 
two or three bodies there Jhould manifeiily enfue a great and tU" 
multuary agitation df fmall parts ^ and yet even during this con^ 
fli£f^ not anj fenjible Heat^but a confiderable degree of Cold be pro " 
ducedj and that even in the Internal parts of the mixture ^ The 
other isyWhence the vafi force of freezing water proceeds^ 
Thefecond, delivers an Attempt to manifefi and meafure the 
greatEKpaofive force of Freezing waterby threeExperiments^ 
The third^rtoitts a NewExpenment about the Produftion of 
Cold by theGooflifl: of bodies appeariog to makeanEbuUition. 
'From thefe Piirncuiars, this Book proceeds to another Tra&^ 
containiDg Obfemdttons and Experiments about the SaUnefs 
of the Sea, ^ . ' 
la it the Authorj Dot'being fatisfied with the opinion of the 
'Veripateticks^ho derive the Saltaels of the Sea from the Adu« 
ftfoo of che water by theSoa-beams^'iod ha-ving lofwered the 
.argutpeotg al!edg4'd for thatopioioo (whrre, upao occafibo^ 
many coofiderabk Obfervations and Experimems do occur,), 
' delivers lis his ow'n fentirneoti: about ^he Gaufeof that Phmo^ 
■ m.enon^ rhsreio agrceifig with the famous Gaffhdi md kme 
tOihi:f Modern ■Writer^/ mz. That the Sea deHv^esits^liltnefs 
from' 
