1907,] 



The Pressure of Bile Secretion, etc. 



521 



experimented on was 300 mm. bile. The table presents the figures for each 

 animal. 



Dog. 



Sex. 



Weight. 



Maximum Jpre ssure 

 of bile. 







kilos. 



mm. 



A 



Male 



10-5 



328 



B 





33-0 



295 



C 





12-6 



243 



D 



Female 



11-5 



285 



E 



Male 



12-2 



342 



F 





11-0 



285 



a 





9-25 



304 



H 



>j 



10-5 



315 



Four ordinary rabbits gave us maximum bile pressures ranging from 

 181 to 204 mm. bile. The average pressure was 197 mm. 



In two Belgian hares pressures of 225 mm. and 306 mm. bile respectively 

 were recorded. The latter animal was a large one, and the rate of bile 

 secretion was rapid. 



The subjoined table gives the details. 



Animal. 



Sex. 



Weight. 



Maximum pressure 

 of bile. 





Female 

 Male 



Female 

 Male 



Female 



grammes. 

 2800 

 2100 

 1900 

 3300 

 2700 

 2250 



mm. 

 225 

 203 

 181 

 306 

 200 

 204 



Ordinary rabbit B 



Ordinary rabbit C 



Belgian hare D 



Ordinary rabbit E 



Ordinary rabbit F 



We made two estimations in guinea-pigs, but found these animals difficult 

 to work with. A male guinea-pig, weighing 480 grammes, gave us a 

 maximum bile pressure of 122 mm. ; a female, weighing 650 grammes, gave 

 a maximum of 154 mm. bile. These figures are less than those given by 

 Friedlander and Barisch. Both guinea-pigs took the anaesthetic badly, and 

 died before many observations had been made. Our figures are for this 

 reason in all probability lower than the average. 



In one monkey (Macacus rhesus) the maximum bile pressure was found 

 not to exceed 220 mm. bile. This animal was unhealthy, and had suffered 

 for some time from diarrhoea. In another monkey (Macacus rhesus) the bile 

 pressure rose to 321 mm. bile. 



The highest bile pressures were recorded in cats, 373 mm. bile in Cat D 



