CONTENTS. XI 



SATURDAY, SEPTEMBER 14. 



Page 



1. First Report of the Committee on the possibility of calculating Tables of 

 certain Mathematical Functions, and, if necessary, of taking steps to carry 



out the calculations and to publish the results in an accessible form 497 



2. On some Formulae connected with Bessel's Functions. By Dr. Meissel 498 



3. On the relations between Ray-Ourvatures, Brachistochrones, and Free 



Paths. By Professor J. D. Everett, F.R.S 498 



4. On Curves in Space. By Professor Cayley, F.R.S 499 



5. On the Extension and Bending of Cylindrical Shells. By A. B. Basset, 

 M.A., F.R.S 499 



6. Simplified Proofs (after Euler) of the Binomial Theorem (i.) for any 

 Positive Fractional Exponent ; (ii.) for any Negative Exponent. By 



T. Woodcock, M.A 501 



7. On the Extensibility of Liquid Films. By Lord Ratleigh, LL.D., 



Sec.R.S 502- 



8. On Hysteresis in the relation of Strain to Stress. By Professor J. A. 

 EwiNs, F.R.S 502 



9. On the relation of the Ether to Space. By Dr. G. Johnstone Stoney, 

 F.R.S 504 



10. On the E.M.F. produced by an Abrupt Variation of Temperature at the 

 point of contact of two portions of the same Metal. By Professor Henry 

 Stroxtd, M.A., D.Sc 504 



MONDAY, SEPTEMBER 16. 



1. Fourth Report of the Committee for inviting Designs for a good Dif- 



ferential Gravity Meter 504 



2. Report of the Committee for the Collection and Identification of Meteoric 

 Dust 504 



3. Fifth Report of the Committee for considering the best methods of re- 

 cording the direct Intensity of Solar Radiation 505 



4. On the Black Bulb Thermometer in Vacuo. By Professor Herbert 

 McLeod, F.R.S 505 



5. Fifth Report of the Committee for considering the best means of Com- 

 paring and Reducing Magnetic Observations . 506 



6. On Atmospheric Electricity. By Professor Leonhard Weber ..., 506 



7. Electrification of Air by Combustion. By Masnus Maclean, M.A., 

 F.R.S.E., and Makita Goto 506 



8. Notes on Atmospheric Electricity and the use of Sir William Thomson's 

 portable Electrometer in the Tropics. By Professor C. Michie Smith 507 



9. On PhotogTaphs of Lightning. By Professor Leonhard Weber 507 



10, On Dark Flashes of Lightning. By A. W. Clayden, M.A 507 



11, Fourth Report of the Committee appointed to co-operate with the Scottish 

 Meteorological Society in making Meteorological Obsei'vations on Ben 

 Nevis 608 



12, The Determination of the Amount of Rainfall. By Professor Cleveland 

 Abbe 508 



13, Hygrometry in the ' Meteorological Journal.' By C. Piazzi Smyth 508 



14, Eighteenth Report of the Committee on Underground Temperature 509 



