E. B. Hunt on a new Sounding Apparatus, " 
-ifneeded, a component acting downwards and due to the forward 
 draggi he india-rubber bag should then be fastened to the 
lower part, so as to compel it always to indicate the pressure 
ound. 
he common patent 
aying 
and 
which it passes. 
at once be seen how great an advantage this will give in 
: ays. | 
air-tube is to open into a cistern Or basin or syphon branch, 
ting with the open-glass indicator or scale tube, the 
dd on ascale, the flexible tube connecting 
cad cimara® If great depths are attempted with this 
co ; ecessary. . wae 7 
mbination, nis Sudo pce J: in using an incompressible 
e fas ‘cua eck ic gravity would give 
Sifisrocial “pre : es Thus Sr eons eile has sp. grav. = 
f absolute alcohol do. = 792, olive oil do. = “915, Ww 
do. = -993, either of which introduced into th 
Or 
