876 EXPERIMENT STATION RECORD. 



niagnetojirains, nnmely, the mean ordinates for the day from 24 hourly readings of 

 tlie horizontal force, the c'ecliuation, and the vertical force, uncorrected for instru- 

 mental errors and changes of temperature. On days exhibiting very disturbed mag- 

 netic conditions the hours and the values of the maximum and minimnm ordinates 

 are given. 



"The object in collecting these data is to institute a comparison between the crude 

 magnetic readings, jorticiilaidy of the bifilar, and the temperature changes at mete- 

 orological stations in the Northwest. Ultimately such comparisons will show how- 

 far unreduced magnetic observations may be available for determining the direc- 

 tion and the intensity of the temperature variations and other weather conditions 

 before these become fully developed, as given by the isotherms and isobars of the 

 daily weather maps. It has already been shown that weather and magnetism con- 

 form on the average to a normal type, but the problem of the synchronous changes 

 from day to day is still under advisement as a practical feature in forecasting." 



Wreck and casualty chart of the Great Lakes, 1894 {U. S. 



Bcpt. Agr., Weather B urea i(, J eliart with text, So hy 36 in., Feb., 1895). — 

 This (;Lart gives in detail tlie inimber of casualties occurring on Lakes 

 Superior, Michigan, Huron, Ei-ie, and Ontario, and tlie connecting 

 rivers during the season of 1894, and inchides besides the record of 

 total loss of 44 vessels and cargoes, involving a loss of $043,243, the 

 partial loss of 68 vessels and cargoes to the amount of $349,544, and 

 the sacrifice of G8 lives. — o. l. FASSia. 



Meteorology in France during 1892, E. Mascart {Ann. Bureau 

 Central Metvorol. France, 1892, 3 vols. Paris: 1894).— The following 

 memoirs occur annually in volume I of this series: Summary of thun- 

 derstcnms in Frauce; magnetic observations made at the observatory 

 of Pare Saint-Maur; magnetic observations made at the observatory of 

 Perpignan; magnetic determinations made in France; study of the 

 progress of the phenomena of vegetation and the migration of birds; 

 meteorological observations made at the Central Meteorological Bureau 

 and upon the Eiffel Tower. Besides the above annual reports the 

 volume contains: First series of meteorological observations made ou 

 Mont Blanc in 1887, by J. Vallot; remarks upon the observations made 

 on the summit of Mont Blanc in 1887, by A. An got ; summary of studies 

 of the progress of i>henomena of vegetation and the migration of birds 

 in France during the 10 years 1881-'90, by A. Angot; squalls and. 

 thunderstorms, by E. Durant-Gr^ville. 



Volume II contains the observations made during the year at 126 

 stations in France, 36 stations in Algeria, and at 23 colonial stations. 

 Volume III contains a detailed statement of rainfall at 409 stations iu 

 France. — o. l. fassig. 



Rainfall of the Hawaiian Islands, J. Hann {Meteorol. Ztschr., Wien 

 (1895), ]}p. 1-14). — The islands lie in the heart of the northeast trades. 

 According tio McKibben, the trades prevail during 258 days at Hono- 

 lulu. This insures a constant temperature, but great variation in 

 rainfall in the mountainous regions. 



The greatest precipitation occurs on the windward side of the south- 

 easterly and largest of the islands, Hawaii, which has a maximum fall 



