WHOLE \'OI-. 



NOTES. ASIA 35 



up to 1902 were copied from the Ind. Metl. Memoirs Vol. XVI, where 

 they were reduced to the present height of 14 ft. Im-oui 1878 to 1888 

 the observations were recorded at to" and 16"; from 1889 to 

 November 1905 at 8'' and from l)eceml)er 1905 to date at 7" during 

 the winter months. Noveml)er to March, and at 8" during the other 

 months. The 10'' and 16" data were recUiced to the 8" series by 

 applying the corrections contained in the Ind. Metl. Afemoirs Vol. 

 XA'II, p. XXXI : but no correction was applied to reduce the 7'' 

 readings to the 8'' e(]uivalcnts. 



JASK 



Height of barometer from start to date has been 13 ft. The data 

 from start to January 1910 were the means of 8'' observations; 

 from February 1910 to date they have been 7'' readings. No cor- 

 rection was applied to reduce the latter to the former series. 



SIBERIA 



GENERAL REMARKS 



The following is an extract from a letter from the late Director of 

 the Central Physical Observatory, Leningrad, dated June 20, 1925: 



We are sorry not to be aljle to give 3'ou the values of pressure for the 

 stations : Vladivostok, Novo-Mariinsky Post, Blagovieshtchensky Priisk, Ust 

 Mayskoye and Turukhansk, the records of same as regards pressure being not 

 trustworthy enough. Up to 1881 homogeneous series of observations in the 

 Asiatic part of the Union are very scarce and beside that in most cases it 

 proved to be ahnost impossible to establish their complete homogeneity within 

 this period of time. These considerations led us to the decision to give you 

 the data only since 1881. 



The data relating to the period 1881-1915 were controlled by means of 

 every method at our disposal ; by the method of differences, by the dressing 

 up of mean annual isobars, l)y the examination of the animal change, by 

 computing the departures from the mean deducted from a long range of 

 years, etc. This work was made in connection with two extensive mono- 

 graphs (which arc in prci)aration) of Prof. A. A. Kaminsky as regards 

 pressure of the air, and of the Senior Physicist Eugenie Rubinstein as regards 

 temperature. In the " Annales de I'Obscrvatoire Physique Central " for 1907 

 and 1909 mdications concerning the deterfnination of absolute heights of the 

 barometers at the meteorological stations in the Russian dominions in Asia 

 were given in a supplement to a previous paper of Prof. Kaminsky treating 

 this subject (Memoirs of the Russian Academy of Sciences, v. XII N. 2). 

 The whole series of observations relating to pressure were effected by means 

 of mercury barometers the correction of which in accordance with the normal 

 barometers of the Central Geophys. Observatory were periodically made at 



