Miscellaneous. 77 



hour of the day and night, to be kept at some military or naval 



station in the South of England. 



Note. Until the phaenomena and distribution of diurnal temperature 

 are more thoroughly understood than at present, we can hardly 

 hope that any very sure footing has bien obtained in the study of 

 meteoroh'gy. The hourly register kept for several years at the 

 military station of Leith Fort, in lat SC, has shown that we want 

 nothing but the combination of a sufficient number of trust-worthy 

 observations, in order to obtain lesulis of primary inijiortance lo 

 the science, and which miy one day enable us to arrive at the 

 true firm of the daily and annual curves if mean temperature 

 with a precision almost mathematical. In order, however, to ex- 

 tend the benefit of such investigations, it is absolutely necessary 

 that they should be pursued in diflerent latitudes. The applica- 

 tion to rendering available registers otherwise almost without 

 value, from not being made at the proper hours, will be best 

 illustrated by a reference to the account of the Leith observations. 

 (Transactions of the Royal Society of Edinburgh, vol. x.) 



II. That the estahlishment of such an hourly meteorological 

 register be pointed out as a highly interesting object, in refer- 

 ence especially to the important point of intertropical climate, 

 to THE Committee of the Association in India. 



III. That the Committee in India be requested to endeavour 

 to institute such observations as may throw light on the pheno- 

 mena oj" the horary oscillations of the barometer, near the equa- 

 tor. Should the coiicurrcnco of the Committee on these points 

 be obtained, it would probably be desirable that the Association 

 should take measures for sending out delicate and accurate 

 instruments. 



IV. That Mr. Phillips and Mr. Wm. Gray, jun. of York, be 

 requested to undertake a series of experiments on the compara- 

 tive quantities of rain falling on the top of the great tower of York 

 Minster, and on the ground near its base. The Committee have 

 been induced to propose this specific question in consequence of 

 the local fitness of the situation, and the facilities offered for 

 its solution by the authorities ; but it is to be wished that 

 similar experiments should be made elsewhere, that by an ex- 

 tended comparison of observations, light may be thrown upon 

 the anomalies which have been observed at Paris and in other 

 places. 



V. That the Association should express its desire to receive 

 a satisfactory exposition of the theory of the moistened bulb hy- 

 grometer, and that observers be also invited to institute series 

 of comparative experiments on the indications of the moistened 

 thermometer and the temperature of the dew point. 



Note These indications may be ascertained by Mr. Dalton's process, 

 or by IMr. Daniell's Hygrometer, or by both. Notwithst mding 

 the ingenious and laborious researches of Hutton, I)e Saussure, 

 Leslie, Anderson, and Gay-Lussac upon this subject, scientific 

 dcduclions drawn from more extended experiments arc greatly 



