10, 
CONTENTS. ix 
P Page 
On the Attractive Influence of the Sun and Moon causing Tides, and the 
Variations in Atmospheric Pressure and Rainfall causing Oscillations in 
the Underground Water in Porous Strata. By Isaac Roperts, F.G.S., 
IMENT Bietec «2 Josea ean sais da vaggadaaabspana see sy adele daesusemeuendandenevaisvinsesaedee 405 
il. On the Physical Theory of the Tides, with especial reference to their 
Diurnal Inequality. By the Rey. James Pearson, M.A., F.R.AAS......... 405 
SATURDAY, SEPTEMBER 22. 
1. Report of the Committee on Mathematical Tables .............cccseseesceeenees 406 
2. On Lamé’s Differential Equation, By Professor LINDEMANN ..... waeceneded 406 
3. On a Fundamental Theorem in the Dynamics of Non-Euclidian Space. 
By Professor Ropert 8. Baty, LL.D., FAR.S.  .....ccccccecensssseeseecensee ees 406 
4, On a Geometrical Illustration of a Dynamical Problem. By Professor 
Pee MIIE SALT, Lal 15D)) 9 BBics Neneacaasaeacancedsunessneas qectadvasdestadueddaddes 407 
5. On an Approximate Depts forx! By Bieter A. R. Forsyri...... 407 
6. On a Generalised Hypergeometric Series. By Professor A. R. Forsytu... 408 
7. Note on a Simple Method of Solving the General Equation of the Fourth 
Meets Dy ALERED: WiODGBirdasrscecreserercacntarsteetstersacthccncsestosenads ree 408 
8. Oa Symmetric Functions, and in particular on certain Inverse Operators 
10. 
UG 
oe 
11. 
in connection therewith. By Captain P. A. MacManon, R.A. .........06 409 
. On the most Commodious and Comprehensive Calculus. By Dr. Ernst 
SCHRODER.......02scocceccscses Pe care Ra tadk ocb ten ened Mbeaxutecesan ee) UT 
Exposition of a Logical Principle, as disclosed by the Algebra of Logic, 
but overlooked by the Ancient Logicians. By Dr. Ernst ScoroprEr ... 412 
On Curves of the Fourth Class, with a Triple and a Single Focus. By 
MUANG TEV Ns JBN EEY:, She EUs 56 esis etn selsaciese'eceen ues ve sucuvasaes sonacacnee iy envere 412 
MONDAY, SEPTEMBER 24. 
. Sixteenth Report of the Committee on Underground Temperature ......... 414 
Report of the Committee appointed to co-operate with the Scottish 
Meteorological Society in making Meteorological Observations on Ben 
PUBOTEL” (CAR SES apie Aap te el na = Se Aw ONE Sn Ea Dae ae 414 
. On the Completion of the European portion of the Preliminary Meteoro- 
logical Catalogue. By G. J. SYMONS, F.R.S.......cccccceee secsecsecsscescceces 414 
. On the Heat of the Sunshine at the Kew Observatory, as registered by 
Campbell’s method. By Professors H. E. Roscos, F.R.S., and BaLFrour 
TOTES aS 8 RTE PER RO nero” CUTTS IR soowee 414 
On apparent Sun-spot Inequalities of Short Period. By Professor Bat- 
FOUR STewakt, F.R.S., and W. Lanr Carpenter, B.A., B.Sc. ..........65 418 
. On the Forms of the Tifestes exerted by the Sun on the Magnetism of 
the Harth. By Professor BALFoUR STEWART, F\R.S. ..ccecceeceeceeeee tenes 419 
. Description of a Marine Anemometer. By Dr. W. G. Brack, F.R.M.S... 422 
. On a Method for Measuring the Height of the Clouds. By Professor 
LLVILE TT E cs Re ee Oe: a ee Ree RI e taal oie old SEE 422 
. On Fixing a Standard of White Light. By Captain Annzy, F.R.S....... 422 
10. 
On the Dependence of Total Radiation on Temperature. By Sir Wintram 
SSUETMETIN PIE UB ERIS ios Chseods cnet dace sens ececuesdecdaitaanddécduduabitedcanes 425 
On a Bei giving a Constant Light. By A. Vernon Harcourt, 
BT A., ,. seg aeeha titans nap ays cacaivs siascey ecubelsuivenamasa tee caseeasetg gets as at 426 
