January 25th, 1921.] Proceedings. xiii. 



considered in its relation to exceptional children — the deformed, 

 the diseased, the mentally unfit, &c. It had not been concerned 

 with measuring the fitness of the child to put forth effort. 

 Further tests of capacity to put forth effort were needed. These 

 tests might be based either upon the w 7 ork of the heart, the 

 work of the lungs, or the work of the nervous system. 



Dr. Mumford described the new tests, which are mainly 

 concerned with breathing. He said they had been brought into 

 prominence by the work of the Air Force, and were now being 

 adapted to bo3 T s in the Manchester Grammar School and to 

 students in the Manchester University who volunteered for 

 examination. 



The first test, dealing with the amount of air used in 

 respiration, was measured by the spirometer; the second, which 

 dealt with the force of the respiration, was measured by pres- 

 sure against a column of mercury. The third was concerned 

 with the movements of the chest. Dr. Mumford showed the 

 result of these tests at different ages, and exhibited a specially 

 designed waistcoat, by means of which the chest movements 

 could be examined. 



General Meeting, January 25th, 1921. 



Sir Henry A. Miers, M.A., D.Sc, F.R.S. {President), in the 



Chair. 



Miss Annie Ellis, B.Sc, Science Mistress, The Manchester High 

 School for Girls. Dover Street, Manchester, 1, Moon Grove, Rusholme, 

 Manchester; and Mr. F. J. Harlow, B.Sc, A. R.C.Sc. (London), 

 Principal of the Blackburn Municipal Technical College, The Municipal 

 Technical College, Blackburn; were elected Ordinary Members of the 

 Society. 



Ordinary Meeting, January 25th, 192 1. 



Sir Henry A. Miers, M.A., D.Sc, F.R.S. (President), in the 



Chair. 



A vote of thanks was passed to the donors of the books upon 

 the table. These included : — Vols. 1-5 of the " Journal of the 

 Manchester Astronomical Society JJ (8vo., Manchester,. 1913-20), 

 presented by the Editor; "Sir Norman Lockyer, K.C.B., F.R.S." 

 by Sir Richard Gregory (i2mo., London, 1920), presented fry 

 Lady Lockyer; and ''Cheap Steam," Vol. IV, 1920 (410., 

 London, 1921), presented b}^ Messrs. Ed. Bennis & Co., Ltd. 



Mr. W. E. Alkins, M.Sc, read the following papers : — 



1. "Variation of Sphceria. I. Sph. lacustre (Miiller), by W. 

 E. Alkins, M.Sc; 



