40 REPORT — 1851. 



thermometer inserted; scale from 27 to 31 inches; vernier moved by rack and pinion; 

 made by Newman, 122 Regent Street, London, and imported to direct order in May, 

 1848. This instrument is placed inside the house, in a room facing S.W. by S. 



Dry and wet bulb Thermometers, 1, 2. — Made by Newman, and received direct 

 from him. Ivory scales, graduated to single degrees, half-degrees estimated. 



Self-registering Thermometers, 3, 4. — Made by Newman, and received direct from 

 him. Metal scales, graduated to half-degrees. These four thermometers are placed 

 in a thatched slied 20 feet by 13, in which there is a free circulation of air. The 

 shed is at a short distance from the house. 



Black bulb self-registering Thermometers. — Made by Newman, and received from 

 him in 1850. Metal scale, graduated to half-degrees, fixed 4 J feet from the ground, 

 facing south, fully exposed to the sun, and at a distance from the house. 



Rain-gauge, made by Newman. 



Note by Dr. Biiisf on the Meteorology of Futtegurh. — The following tables furnish 

 an abstract of the meteorological observations taken by Mr. J. C. Pyle at Futtegurh. 

 Mr. Pyle is an able, an old and experienced meteorologist. His instruments seem 

 of the best quality and in good order, and the correctness of his observations may 

 be relied on. For the first half of the year readings were taken at 6 and 10 a.m., at 

 noon and at 4, 6 and 10 p.m., thus giving three of the turning-points of the baro- 

 meter, borastices as we call them in India. The 6 o'clock observation gives a close 

 approximation of the fourth. It is unfortunate that for the latter part of the year 

 Mr. Pyle should have given readings at 10 a.m. and 4 p.m. only. Futtegurh, in lat. 

 27° 21' N., long. 79° 31' E., is the northernmost station in India, so -far as I know, 

 from which observations so full as those of Mr. Pyle have been received. The Simlah 

 observations have not yet been laid before the world. The following are the means 

 of the various months of the year : — 



Jan. 29-400. April 29-116. July 28-389. Oct. 2°9-250, 



Feb. 29-420. May 28-916. Aug. 28-448. Nov. 29-355. 



March 29-270. June 28-771. Sept. 28-513. Dec. 29-389. 



It will thus be seen that the barometer obtains its maximum, as in most places of 



India, in February, and its minimum in July, the rain during the year being 24*86 



inches. The daily range of the various months seems the following : — 



Jan. -017. April -131. July -110. Oct. -117. 



Feb. -116. May -129. Aug. -097. Nov. -110. 



March -112. June -152. Sept. -114. Dec. -118. 



These ranges are unusually high for a latitude so far north as Futtegurh, and they 

 depart considerably from tlie general law by which the daily range diminishes as the 

 barometer sinks. The June and July ranges, when the mercury was at its lowest, 

 are higher, or nearly as high, as those of January and February, when the pressure 

 was greatest. When we find anomalies of this class in the northern hemisphere, 

 with others still more striking just south of the line, at St. Helena for example, where 

 the mercury is almost stationary, how earnestly does the meteorologist long for more 

 observations, or speedy access to those which have already been made ! Simlah, 

 Sincapoor, Lucknow, Bombay, Trevandrum, have ail treasures in this way requiring 

 to see the light. 



Note by Colonel Sykes on the Meteorology of Futtegurh. — Mr. Pyle appears to have 

 had trustworthy instruments, and to have made a careful and laborious use of them. 

 I presume he has not had any opportunity of comparing them with standards, nor 

 does he mention the elevation of Futtegurh above the sea ; but it cannot be less than 

 600 feet, as the maximum mean pressure on the barometer in February was only 

 29°-420 ; but as Mr. Pyle would seem to have taken a mean of means for his quar- 

 terly determinations, in case he has followed the same plan in fixing his monthly 

 means, 29°'420 may not be quite accurate. The annual curve of pressure would 

 appear to be regulated by the place of the sun in the ecliptic, as I showed was the 

 case in my paper on the Meteorology of India, in the annual curves of pressure at 

 Bombay, Madras and Calcutta. The mean depressions of the wet-bulb seem to 

 have been always greatest at 4 p.m., diminishing with decreasiug temperature, and 

 increasing with the temperature. The depressions must have been very marked in 



