1our Receiver become much more languid
then ordinary, by reaſon of the want of
Air, ſo they would grow ſtronger, in caſe
there were an unuſual quantity of Air
crouded and ſhut up in the ſame Veſſel,
which may be done (though not without
ſome difficulty) by the help of the Pump,
provided the Cover and Stopple be ſo
firmly faſten'd (by binding and Cement,
or otherwiſe) to the Glaſs; and to each
other, that there be no danger of the
condenſ'd Airs blowing of either of them
away, or its breaking through the jun
ctures. Theſe thoughts, My Lord, as I
was ſaying, we entertain'd; but for want
of leaſure, as, of as good Receivers as
ours, to ſubſtitute in its place, in caſe we
ſhould break it before we learn'd the skill
of condencing the Air in it, we durſt not
put them in practice: Yet, on this occa
ſion, give me leave to advertiſe Your
Lordſhip once for all, That though for
the reaſons newly intimated, we have,
Onely in the ſeventeenth Experiment,
taken notice, that by the help of our En
gine the Air may be condenſ'd as well as
rarified; yet there are divers other of our
Experiments, whoſe Phænomena it were
then ordinary, by reaſon of the want of
Air, ſo they would grow ſtronger, in caſe
there were an unuſual quantity of Air
crouded and ſhut up in the ſame Veſſel,
which may be done (though not without
ſome difficulty) by the help of the Pump,
provided the Cover and Stopple be ſo
firmly faſten'd (by binding and Cement,
or otherwiſe) to the Glaſs; and to each
other, that there be no danger of the
condenſ'd Airs blowing of either of them
away, or its breaking through the jun
ctures. Theſe thoughts, My Lord, as I
was ſaying, we entertain'd; but for want
of leaſure, as, of as good Receivers as
ours, to ſubſtitute in its place, in caſe we
ſhould break it before we learn'd the skill
of condencing the Air in it, we durſt not
put them in practice: Yet, on this occa
ſion, give me leave to advertiſe Your
Lordſhip once for all, That though for
the reaſons newly intimated, we have,
Onely in the ſeventeenth Experiment,
taken notice, that by the help of our En
gine the Air may be condenſ'd as well as
rarified; yet there are divers other of our
Experiments, whoſe Phænomena it were