252 REPORTS ON THE STATE OP SCIENCE, — 1916. 



avoided by the fact that the investigators have been conversant with 

 one another's work, and a Hne of demarcation was drawn whereby the 

 Medical Eesearch investigation continued on the lines of our first Report 

 while the British Association Committee approached the separate 

 problem of accumulated fatigue, and concentrated more particularly 

 on questions of method, endeavouring also to facilitate the co-ordination 

 of previous investigations, and compiling a complete Bibliography of 

 Fatigue in all its aspects, which should be of the greatest assistance to 

 students in the future. This laborious task has been rendered yet more 

 formidable by the interruption of communications with the Continent, 

 but the resources of the University Library and the Psychological 

 Library at Cambridge have once more been freely drawn upon. This 

 BibHography, already comprising close upon 1,000 entries, under the 

 threefold classification of years, subjects, and authors, has not yet 

 reached the final stage necessary for publication; but, as an example, is 

 submitted the list of entries classified under the heading ' General,' that 

 is to say, dealing with the whole subject rather than with any special 

 aspect. 



Owing to circumstances also arising out of the continuance of 

 hostilities, memoranda on changes in factory hours and the experience 

 of managers promised by members from their various localities have 

 been held over, and the present Eeport is based for the most part on 

 research undertaken by the Investigator (Mr. C. K. Ogden) and by Mr. 

 P. S. Florence. The co-operation has been secured, amongst others, 

 of Professor Lee, of Columbia University, Mr. Cyril Burt, Psycho- 

 logical Adviser to the L.C.C., Miss May Smith, of Cherwell Hall, 

 Oxford, and Mr. E. J. Dingwall, of the Cambridge University Library. 

 The effect of Fatigue on Women Workers is being studied by Miss 

 A. M. Anderson, Chief Lady Inspector of Factories, a translation has 

 been made of those portions of Biicher's Arbeit und Rhythmus that are 

 relevant to modern industrial conditions,* while Miss B. L. Hutchins 

 has presented a memorandum reviewing the steps by which public 

 attention has been gradually directed to the effects of fatigue in 

 production. 



The Committee was appointed in the first instance to consider the 

 problem of Fatigue from the Economic Standpoint. This might have 

 been interpreted only to cover the effect of fatigue upon the output of 

 particular groups of workers. But the Committee has felt from the 

 beginning that behind this there was the larger question of the effect 

 of fatiguing employments on the general health of the working popula- 

 tion, the frequency of sickness, the period of industrial efficiency, the 

 mortality rate in particular industries. Difficult though this investiga- 

 tion is, the Committee has thought that it ought not to be shirked ; and 

 in the attempt to deal with this problem under the title of accumulated 

 fatigue they are able to present a memorandum (Section I.) from Dr. 



' The effect of rhythm in enabling' the organism to pertorm with ease an 

 amount of work which, if it were absent, would cause acute distress and fatigue 

 is well known, as for instance in the ground covered by fragile people at a ball. 

 The noise, regularity, ' swing ' and team-work of so many processes in modern 

 industry present very favourable ground for the application of rhythm, and the 

 Committee have already made studies of some of its aspects. 



