288 



SGIENCK 



[N. S. Vol. IX. No. 217. 



venting the oncoming of exhaustion. Pro- 

 fessor G. Carl Huber (Michigan) i-eported 

 his ' Observations on the innervation of the 

 intracranial vessels.' In the pia mater 

 and the cranial dura mater of the dog, cat 

 and rabbit two kinds of nerves were found, 

 sensory and vasomotor, the former being 

 medullated, the latter non-medullated. The 

 • latter were found to terminate in the muscu- 

 lar wall of the arteries. Professor C. F. 

 Hodge (Clark University) reported upon a 

 research undertaken with Mr. H. H. God- 

 dard to test the possible amceboid move- 

 ments of cortical nerve-cells. The brains 

 of rested and fatigued animals were com- 

 pared. All the experiments in which defi- 

 nite results were obtained confirmed De- 

 moor's results, showing a contracted and 

 varicose condition of the dendrites, and, 

 moreover, extend our knowledge to include 

 effects of normal fatigue. The experiments 

 were fully controlled, the control specimens 

 showing dendrites and contact granules 

 uniformly expanded. Dr. G. W. Fitz (Har- 

 vard) exhibited a new chronoscope, in 

 which the time is measured by the fall of 

 water within a graduated glass tube. A 

 valve at the lower end of the tube is opened 

 and closed by electro-magnets connected 

 with the keys of the reaction apparatus. 

 By invitation Professor O. N. Rood (Colum- 

 bia) exhibited his flicker photometer. Pro- 

 fessor Miinsterberg discussed ' The physio- 

 logical basis .of mental life.' Professor G. 

 T. W. Patrick (Iowa) discussed ' The con- 

 fusion of tastes and odors.' Dr. E. W. 

 Scripture gave an exhibition of methods of 

 demonstrating the physiology and psychol- 

 ogy of color. 



At the joint meeting of the AiBliated So- 

 cieties, on Thursday afternoon, in the dis- 

 cussion upon ' Advances in methods of 

 teaching,' Professor W. T. Porter read a 

 paper upon ' The teaching of physiology in 

 medical schools.' 



At the first session on Friday, the third 



day, Professor Chittenden exhibited a con- 

 venient form of sphygmograph. Professor 

 Graham Lusk (University-Bellevue), re- 

 ported for Mr. W. H. Parker on ' The max- 

 imum production of hippuric acid in rab- 

 bits.' If benzoic acid be fed to rabbits in 

 quantity just sufficient to unite with the 

 glycocoU formed in the animal, the nitrogen 

 that is excreted in the hippuric acid is in a 

 fixed ratio of about 1 : 20 to the total nitro- 

 gen of the urine. This indicates that about 

 5 % of the nitrogen of proteid may be elim- 

 inated in the form of glycocoll. The latter 

 is probably a cleavage product of proteid 

 to this extent. Professor Chittenden pre- 

 sented the results of ' A chemico-physiolog- 

 ical study of certain derivatives of the pro- 

 teids.' The paper dealt esiDCcially with the 

 results obtained in a careful study of the 

 physiological action of a large number of 

 specific cleavage products of proteids when 

 introduced directly into the circulation. 

 Antipeptone, antialbumid, antialbumoses, 

 protogelatose, deterogelatose, pure gelatine 

 peptone and so-called hemipeptone were 

 among the products studied. The influence 

 on the blood-pressure, blood-coagulation, 

 immunity, lymph flow, urinary secretion, 

 etc., were all carefully studied and results 

 of interest were obtained. Professor G. N. 

 Stewart (Western Reserve) presented the 

 results of numerous experiments on ' The 

 molecular concentration and electrical con- 

 ductivity of certain animal liquids with 

 special reference to blood.' Professor H. 

 P. Bowditch (Harvard) read for Dr. J. K. 

 Mitchell a paper on ' The influeuce of mas- 

 sage upon the number of blood globules in 

 the circulating blood.' In health massage 

 increases the number of red corpuscles and 

 to some extent their haemoglobin value. In 

 antemia there is a very constant and large 

 increase in the number of red corpuscles 

 after massage. Anaemia may be due to a 

 lack of activity or availability in the cor- 

 puscles. Dr. P. A. Levene (New York) 



