137 



ard barometer ; and also the precession, by the same interval, of the 

 mean changes of this latter instrument over those of the mountain 

 barometer. The author concludes by announcing many objects he 

 has in view in the investigations in which he is at present engaged. 



12. " Note on the Tides in the Port of London," by J. W. Lub- 

 bock, Esq., V.P. and Treas. R.S. 



The author gives a comparative view of the predicted times of high 

 water deduced from Mr. Bulpit's tables, White's Ephemeris, and the 

 British Almanac, with the observations at the London Docks, from 

 data furnished to him by Mr. Stratford j and also a comparison, by 

 Mr. Deacon, at the London and St. Katherine's Docks. 



13. " Researches in Physical Astronomy," by the same. 



In this Paper a method is given of developing the disturbing func- 

 tion, in which the coefficients of the inequalities corresponding to any 

 given order, are expressed in terms of the coefficients of the inferior 

 orders; so that, for example, the coefficients of the terms in the dis- 

 turbing function, multiplied by the squares of the eccentricities, are 

 given analytically by means of the coefficients of those independent 

 of the eccentricities, and of those multiplied by their first powers. As 

 the theorems, to which this method gives rise, are of great simplicity, 

 the author considers them as deserving attention. 



The Society than adjourned over the Long Vacation, to the 15th 

 of November. 



