1ſo unprovided of Lungs, and by ſome o
ther conſiderations. But though it need
not be deny'd, that the inſpir'd Air may
ſometimes be of uſe by refrigerating the
Heart; yet (againſt the Opinion that makes
this Refrigeration, the moſt genuine and
conſtant uſe of the Air) it may be Obje
cted, That divers cold Creatures (ſome
of which, as particularly Frogs, live in
the Water) have yet need of Reſpiration,
which ſeems not likely to be needed for
Refrigeration by them that are deſtitute of
any ſenſible heat, and beſides, live in the
cold Water: That even decrepid old
Men, whoſe natural heat is made very
languid, and almoſt extinguiſh'd by rea
ſon of age, have yet a neceſſity of fre
quent Reſpiration: That a temperate Air
is fitteſt for the generality of breathing
Creatures; and as an Air too hot, ſo al
ſo an Air too cold, may be inconvenient
for them (eſpecially, if they be troubled
with an immoderate degree of the ſame
Quality which is predominant in the Air:)
That in ſome Diſeaſes the natural heat is
ſo weaken'd, that in caſe the uſe of Reſpi
ration were to cool, it would be more
hurtful then beneficial to breath; and the
ſuſpending of the Reſpiration, may ſup-
ther conſiderations. But though it need
not be deny'd, that the inſpir'd Air may
ſometimes be of uſe by refrigerating the
Heart; yet (againſt the Opinion that makes
this Refrigeration, the moſt genuine and
conſtant uſe of the Air) it may be Obje
cted, That divers cold Creatures (ſome
of which, as particularly Frogs, live in
the Water) have yet need of Reſpiration,
which ſeems not likely to be needed for
Refrigeration by them that are deſtitute of
any ſenſible heat, and beſides, live in the
cold Water: That even decrepid old
Men, whoſe natural heat is made very
languid, and almoſt extinguiſh'd by rea
ſon of age, have yet a neceſſity of fre
quent Reſpiration: That a temperate Air
is fitteſt for the generality of breathing
Creatures; and as an Air too hot, ſo al
ſo an Air too cold, may be inconvenient
for them (eſpecially, if they be troubled
with an immoderate degree of the ſame
Quality which is predominant in the Air:)
That in ſome Diſeaſes the natural heat is
ſo weaken'd, that in caſe the uſe of Reſpi
ration were to cool, it would be more
hurtful then beneficial to breath; and the
ſuſpending of the Reſpiration, may ſup-