xlii Obituary Notices of Fellows deceased. 



some area of decremeufc on its course, probably at the synapse of the nerve 

 fibre with the muscle fibre. A second stimulus, however, applied to the nerve 

 during the period of increased excitability following the previous stimulus, 

 produces a disturbance of sufficient magnitude to pass the obstruction., and 

 contraction of the muscle results. This period of super-normal excitability, 

 succeeding the relatively refractory phase, is more strongly developed in the 

 crayfish than in the frog. 



In a footnote to this paper, reference is made to some experiments on the 

 phenomena of inhibition and of tonus shown by the muscles of the crayfish 

 claw. It is much to be hoped that notes of these experiments may be found 

 sufficiently detailed to enable them to be published. 



Early in 1914 Keith Lucas gave the Page May Lectures at University 

 College, London, choosing as his subject the phenomena of conduction in 

 nerve. At the outbreak of war, the greater part of these Lectures had been 

 written out for publication as one of the monographs of Prof. Starling's 

 series. After the author's death, the manuscript was revised and completed 

 by Captain Adrian, and the Lectures, which give an excellent summary of the 

 knowledge gained in^ this field, for the most part by the work of the author 

 and his pupils, were published towards the end of 1917. 



It will be seen how great a loss physiological science has sustained in the 

 death of so ingenious and talented a worker at so early a stage of his work. 

 Many further and fundamental advances would undoubtedly have been made 

 if only these researches could have been continued. 



W. M. Bayliss. 



