ON SCIENCE-LECTURES AND ORGANIZATION. 511 



by the Officers of the Observatory, or by persons engaged to come here for 

 the purpose. \Micn limited extracts are required, I -will have them made 

 here at once. When the extracts required are long, T will give every 

 facility to other persons ; the expense then ought to be borne, I think, by 

 those who apply for them. 



I am, my dear Sir, 



Yours very truly, 



G. B. AiBT. 

 Professor Balfour Stciuart. 



Scottish Meteorological Society. 



Scottish Meteorological Society, 

 General Post-Office Buildings, 

 Edinburgh, 13th May, 1873. 

 Dear Sib, 

 Your letter of 28th February last, enclosing the resolution of the Observa- 

 tional Subcommittee of the Science-Organization Committee of the British 

 Association, dated 13th of the same month, was laid before the Council of 

 this Society at their Meeting of 28th ult. 



In reply, the Council have instructed me to state that the more important 

 of the unpublished individual Observations in Meteorology which this Society 

 possesses are the following : — ■ 



I. Eegular daUy observations made at the Society's Stations, beginning with 

 January 1857. The Stations at which the observations have been and are 

 made are given in the successive Numbers of the Society's Proceedings — the 

 last issued of which I send by this post. The Stations are given on pp. 334- 

 336 and 339-342. The nature of the observations wiU appear from the 

 specimen of the Society's Schedule sent herewith. The hours of observation 

 are 9 a.m. and 9 p.m. At Stykkisholm, in the N.W. of Iceland, the hours are 

 9 A.M., noon, and 9 p.m. 



In addition to the regular daily observations of atmospheric pressure, 

 temperature, humidity, wind (direction and force), rain, and cloud, obser- 

 vations are made at certain Stations on the temperature of the soil, of the 

 sea, and of wells, and on ozone. The Stations at which such observations 

 are made will be seen by consulting p. 329 of Journal sent. 



II. Observations for elucidation of special questions : — 



1. Daily curves showing for every ten minutes the pressure, temperature 

 of dry and wet bulbs, and the rainfall from Nov. 1868 to Nov. 1872. The 

 self-registering instruments with which these curves have been made 

 were designed under the superintendence of the Marquis of Tweeddale, in 

 connexion with the growth of agricultural products. 



2. Observations, twelve times daily, at six Stations, on temperature of the 

 soil (3, 12, 22 inches deep), together with observations of pressure, tempera- 

 tur(% humidity, wind, rain, &c. during these four months, viz. July and Octo- 

 ber lb67, and January and April 1868. 



3. Observations on temperature of drained and undrained hill pasture, 

 and of drained and undrained arable land, at two Stations daily, from 1st 

 October 1864 to 30th September 1865. 



4. Daily maximum and minimum temperatures as shown by thermometers 

 (not blackened) fuUy exposed to the sun and weather, at 4 feet over old 

 grass, at eight Stations, from 1st April 1861 to 30th March 1862. 



