Chemistry and Physics. ALS 
4. In the oblique rhombic and right rhomboidal prisms (monocli- 
nate or monoclinometric system) the conductility has three values ; one 
of which corresponds to that lateral crystallographic axis which is at 
right angles with the vertical; and the others are in the plane at right 
angles with this one, and at right angles with one another, but follow 
certain resultant directions not a pridti distinguishable. The isothermal 
surfaces are ellipsoids not of revolution, in which only one of the three 
axes has a position determinable 4 priori. 
5. In the oblique rhomboidal prism (triclinate or triclinometric). 
__ Senarmont’s memoir has been reported upon by Biot, Beudant and 
: lault, to the Academy of Sciences at Paris, who speak in the 
ghest terms of his mode of experimenting and of the value to be at- 
ached to his results. 
4,] up 
endosmosis, which I have now brought toaclose. I have been led to 
Several very interesting conclusions in relation to the motion of fluids 
in the animal body, occurring without the blood vessels ; but I cheer- 
fully maintain that the worthy old Hales might have made all my de- 
ductions from his own individual investigations. 
| have, in the first place, found that an animal membrane in a dried 
Condition, under the pressure pf the atmosphere is impermeable to air. 
n the tube, fig. 1, is bound at a witha membrane fig 1. 
(bladder), then dried, filled with mercury, and inverted in |, _ 
the cup d in mercury, the quicksilver falls to 27-274 ¥ 
Inches, and there remains through many days. The mer- 
¢ury would remain at 28 inches* if it were possible with- =| 
out boiling to expel the air from it. We have in this an — a 
barometer, one of the ends of which is animal — 
membrane. 
Tates, and in this way there is produced a vacuum in the 
* The normal elevation. ~ ogiast 
