(J44) 
The Tube A D is divided into 3 lenghts $ of which (as in ordi- 
nary ones)BC is to lengthen or contra#, as the Obje# requires : 
But A B is here added, that at A. you.may put fuch Eye- glares 
as ftiall be thought moft coi^njpit, and to fet them ftili at the 
diftance, moft proper for thctSf^lndexes or Pointers, which here 
are fupposd’d to be at B. which length alters alfo in refpe# of 
divers per fons Eyes. E. is a Screw, by which the Great Tube can 
be fixtfo, as by the help of the figures, any fmaller part of it can 
immediately be found, meafuring only, or knowing the divi- 
[tons on BC, the diftance of the objeff-glafs from the Pointers . 
F. is the Angular piece of wood, that lies on the upper Screw of the 
This Reft is reprefented by Figure yf 
As for a Defcription of the Ufes of this ingenioufly contrived 
and very curious Engine , the Reader is defir’d to look back to the 
T^'07' before alledged Numb, 2 $T 
An Account 
Of making a Dogg draw his Breath exaBly like a Wind- broken , 
Horfe as it was devifed and experimented by Dr. Richard Lower 5 
with fome of his Inftrudlive obfer vat ions thereon. 
This Experiment was made before the R Soc. Oftob. 17. 1667, after it 
had been tryed by the Author in private, fome while before . The Acccount 
of it in his own ’Wordspatdfm follows. 
After I had often confider’d the manner and way of Refpiration , 
and by many Obfervations been induced to believe, that the Dia- 
phragme is the chief Organ thereof, I thought, there could be no 
way more probable to try it, then by breaking the Nerves , by 
which its Motion is perform’d: Which maybe eafily (as it was 
a&ually ) done after the following manner 5 
thvftr' Eifjl, pierce the fide of the Animal between the 6. and 7 Ribb 
in the middle of the Thorax , juft over againft the region of the. 
A^^^-'Heart, withafmall Incifton- knife, palling the knife but juft into 
the Cavity of the Breaft (which you may juftly know by finding 
no refiftance to the point of it $ ) then take it out, and put 
in a Director, ora fmall Quill made like it, and thruft it in about 
an inch, directing the end of it toward the Sternum , clofe to the 
infide of the Breaft. Then cut upon it about an inch on th tinier- 
cofial Mufcles 5 by which you may be fecur’d from touching the 
Lungs 
