B. TERRESTRIAL PHYSICS AND METEOROLOGY. 63 



with instruments that had been compared with a standard, 

 are presented synoptically. The author (Cornelissen) takes 

 occasion to call attention to the notably higher temperature 

 which prevails westward of a line drawn from the southern 

 point of Ireland southward. A decided difference is shown 

 between the cool waters washing the Spanish and African 

 coasts and the Azores, and the warmer waters lying to the 

 westward. Zeitschrift fur Keteorologie, November, 1873, 239. 



CLIMATE OF TIFLIS. 



Dr. Moritz, director of the Meteorological Observatory at 

 Titlis, in the Caucasus, gives a short sketch of the extremes 

 of the most important meteorological elements for that city, 

 which afford an interesting basis for comparison with similar 

 regions in the United States. It appears from Moritz's table 

 that the highest barometric pressure during the past ten 

 years occurs, on the average, in November and January, and 

 the lowest in July. The highest temperature recorded is 

 101.8 degrees, which extreme temperature has been reached 

 on three occasions, respectively in the months of June, July, 

 and August. The relative humidity of the air is recorded 

 on two occasions as low as twelve per cent., on twelve or 

 more occasions lower than twenty per cent. In reference to 

 this important element, Moritz remarks that the Tiflis obser- 

 vations completely demonstrate the error of those who have 

 lono; maintained that regions in which the moisture of the 

 air is lower than seventeen per cent, are uninhabitable for 

 mankind, inasmuch as in Titlis, on the average, five times in 

 each year, the relative humidity is less than that mentioned. 

 Zeitschrift filr Meteor vZor/ie, November, 1873, 239. 



THE USE OF HIGH STATIONS IX WEATHER PREDICTIONS. 



Jelinek states that the decision as to the method according 

 to which barometric observations made at stations at vari- 

 ous altitudes shall be treated in order to make them com- 

 parable among themselves and useful for the publications of 

 weather telegraphy, offers a theoretical and practical interest, 

 and he therefore states with fairness some, if not all, of the 

 arguments that have been urged, pro and con, in reference to 

 both the method of the abnormal deviations and that of re- 

 duction to sea-level. Theoretically, it certainly is true, as ac- 



