(no) 
Earth, and there meeting with Salino-fulphureous inines,do ex- 
cite therein a very intenfe heat, and that the Springs flowing 
forth from Mines thus heated conftitute thefe hoc Baths. 
So muchjif not toomuch,of the^r/?Treatife* Of the other 
four^ there are /w, viz. that of Keffiration^ and the Rickets^ 
the former of which having been publifli't once already , 
we have given an account thereof in Num. 70* of the Trafis • 
fo that, for fear of being too prolix, we muftfay no more of it 
here; as we alfo fliall forbear to difcourfe of that other of the 
Rickets ; but haften to make fomc mention of the two remain- 
ing Parts, treating of iht Refpiration of 2i Foetus in the Womb 
and the £^^,and of thcMufcular Motion dmd thtAnimd Spirits. 
Touching the former of thefe, our Author confidering with 
himfelf. How difatus can live in the womb without the zccgCs of 
Air, and finding the offices hitherto alTigned to the Umhilicd 
Arteries tohe ill grounded, fcruples not to affirm with the 
learned Everard^ that the faid Arteries are formed chiefly , if 
not on'y, for the life of Refpration^ declaring, That the Blood 
of the -feWr^<?,being conveyed through the Umbilical Arteri- 
es tothe/>/^r^;^r4/^/m,carriesto the not only the nutri- 
tious Juyce, but alfo with it a quantity of the Nitro-aerial par- 
ticles, whereby the blood of the f^tus , by its circulation 
through the Umbilical veflels, is impregnated juft as 'tis in the 
yeffels of the Lungs; Whence he would not have thzt Placenta 
called any more the L/W but the L»^g/ of the Womb. And 
this fupplement for Refpiration he extends to the Chicken in 
an Egg, aflerting, that the fame doth no otherwife than a Child 
in the Womb breath by the faid Arteries ; efteeming , that the 
primogenial liquors of the Egg , furnifli't with a pure Aerial 
fubftance, being inceffantly conveyed through the Umbilical 
veflels to the Chick,perform to the fame the office not only of 
Nutrition, but of Refpiration alfo. To this he adds, that even 
that gentle Warmth, excited in the Egg by incubation, may al- 
fo contribute fomething,there tofupply thedefeftof Refpira- 
tion ; forafmuch ashefuppofestohaveprovedinhis Treatife 
of Refpiration in general, that the Nitro-aerial particles, by 
the bloods fermentation ftruck out of the parts of the Air,ferve 
Animals for refpiration ; and that , as all heat proceeds, in his 
