362 Dr. J. R. Bradford. [Feb. 21, 



Dextrin. Sugar. 



Fluid to which bile salts had been 



added as well as pancreatin 0'30 gram. T315 gram. 



Fluid to which pancreatin only was 



added 0-24168 1*042245 



The addition of bile salts therefore had increased the production 

 of sugar in the proportion 5 : 4, and that of dextrin in like pro- 

 portion. 



Experiment E. This experiment was conducted with the same 

 proportion of each ingredient and in the same manner, with the 

 exception that the fluids were dialysed in a stream of (tap) water ; 

 the total residue, after evaporation and treatment with absolute 

 alcohol in the manner previously described, was estimated by drying 

 and weighing. The residue in the fluid containing bile salts weighed 

 O314 gram, in the fluid to which pancreatin alone was added, it 

 weighed 0'517 gram. These residues contained starch and a trace of 

 peptone, but no bile salts nor sugar. 



Our conclusions may thus be briefly stated : The effect of fresh 

 and dried bile in hastening the pancreatic digestion of starch in the 

 pig is due to the bile salts ; these salts possess the power of increasing 

 the amount not only of dextrin, but of sugar estimated as dextrose. 



The authors are not at present in a position to explain this in- 

 fluence of bile salts ; the pancreatic solution of starch proceeds more 

 rapidly at first in laboratory experiments, and the retardation after a 

 short interval is very marked. It is possible that the bile salts mRy 

 favour its continuance by entering into combination with the bodies 

 which have this retarding effect. 



II. " The Innervation of tbe Renal Blood-vessels." By J. ROSE 

 BRADFORD, M.B., D.Sc., George Henry Lewes Student. 

 Communicated by E. A. SCHAFER, F.R.S. (from the Physio- 

 logical Laboratory of University College, London). Re- 

 ceived February 1, 1889. 



The following work was undertaken in order to map out the origin, 

 course, and nature of the renal nerves more accurately than had 

 hitherto been attempted. It was considered (more especially in the 

 light of Gaskell's well-known work on the sympathetic) important to 

 decide whether the renal and other abdominal vascular nerves were 

 of two kinds, i.e., vaso-constrictor and vaso-dilator, or whether the 

 latter nerves could not be demonstrated to exist. This research was 

 carried out exclusively on the dog, inasmuch as this was the animal 

 used by Gaskell in his work. 



