Hc^majlatics. 
i8s 
Experiment XXV. 
I. T Cut afunder the ReBum of a Dog, and 
poured in warm Water thro* a Tube fix- 
ed to it 5 the Water gradually paffed the Valve 
at the Cxcum, and flowed along the Guts, up 
to the Pilorus : The perpendicular Height of 
the Water in the Tube was five Feet. 
2. In another Dog, I found the Valve at 
the Cacum fliut fo clofe that neither Water 
nor Air would pafs it, not even when cleanf- 
ed from the Faces, 
3. I fixed alfo a Tube to the Re£ium of a 
third Dog, and poured in warm Water, till 
it ftood twenty Inches high in the Tube; yec 
it did not pafs above fix or eight Inches up the 
Return being hindred by the Faces, which 
yet were not hard enough to be figurated : 
But when the Faces were removed, then Wa- 
ter freely paffed the annular Valve at the Ca- 
cum. Hence we fee how requifite it is in fome 
Cafes, firft to get the Faces below the Valve 
out by a Clyfter 5 after which the Effeds of 
a fecond Clyfter may reach much farther. 
4. Ciu, Have we not from hence as alfo 
from Numb. i. of this Experiment, a hint 
to 
