3he blood is made to circulate in them, having no place in the free 
Air, the blood rauft needs ftagnate in thac Element; Though fome 
Fiflhes , efpecially thofe that emitjand are covered with,a very yif- 
CjOus maifture , as 'tenches , Skates , hels , (which laft , he notes, 
do as often fend forth new flime for their cover , as you wipe of 
tlie former, )will live longer in Air than others. Here he notes, 
thac Fifli under conglaciated water die not fo much for want of 
.Air , as from the plenty of the vapors that iiTue from the warm bot- 
tom. To all which he adds the reafon , why Oyfters , Lobfters, 
Shrimps , and the like , furvive longer in the Air , than other in. 
habitants of the water. Concluding this Chapter with an account, 
why t\it Ser^entinl^md grow torpid of themfelues in winter , and 
after revival cafl: their skins every year. 
FcHTthly ^ he difcourfes of fome J hiding themfelvcs 
in caves during winter , as Bea,rs , Heige hogs , ^c. obferving, 
that, what-ever the tradition be of Bears fleeping all winter, and 
fucking now and then their paws , it will be found, that they fleep 
ibundly at firft for a good while , but afterwards awaken and live 
upon feme provifion they have ftored up for that dead time of win- 
ter; And, astotheoleous moifture fweatingoutof the tubulous 
Channels of their feet , that that hathno other ufe, than to foften 
andfmooth, by being licked up, the Sinuofities of the ftomach 
and bowels that had by long abftinence been much corrugated, and 
fo prepare them again for the new food to be taken in by the ani- 
mal. 
Fifthly^ he inquires how far tis pofFible for Men to live without 
Air. Where he relates firft d^n example,upon hisown knowledge, 
of a woman ftrangled , which was recover'd to life by a good dofe 
of Spirit of Salt Jmomac \ Adding, thatdoubtlefs many fuch 
might be recovered , if the like brisk fpirits together with bleed- 
ing and friflion were employed.Then he inquires into the Pofllbil. 
ity of the living of Men underwater: Where he begins with the 
confiderationof the difference there is between the Wkoi Embryos 
and Urinators or Divers ^ reprefenting , ih^t the former need no 
other Air 5 than what is conveyed intotiiemby the mothers rarifi- 
ed blood , being imbued with an aereal ferment 5 but that the lat- 
ter (the Divers, )I mean fuch as ufe no Art , are of that temper and 
confti- 
