954 EXPERIMENT STATION RECORD. 



dition was found to be poorly suited for the purpose of the experiment, and dead 

 trees practically behaved as insulators. 



Altera little practice it was found that two men could install a sending station in 

 from 10 to 15 minutes, or a receiving station in even less time. All that was neces- 

 sary was to fasten the apparatus to the side of the tree and attach the wires, one 

 above and one below, nailing them into the tree. 



In the course of the experiments an attempt was made to measure the electrical 

 resistance of plant cells between the metallic electrodes inserted in the trunk of a 

 tree, and several curves were taken, but sufficient regularity was not observed t<> 

 enable any generalization regarding the phenomena. In summing up his investiga- 

 tions the author believes that living plants may serve a more important part in elec- 

 trical phenomena than has been generally supposed, and he urges a more general 

 study of the physical phenomena as related to plants. 



Beneficial bacteria for leguminous crops, G. T. Moore and T. R. Robinson 

 (U. S. Dept. Agr., Farmers' Bui. 214, ]>/>■ 48, figs. 17). — This is a popular bulletin 

 giving the results of investigations of the authors on the subject of nitrogen assimila- 

 tion by leguminous crops and the use of artificial inoculating material for the pro- 

 duction of root tubercles upon this class of plants. A previous publication giving in 

 detail the information upon which this bulletin is founded has been noted (E. S. R., 

 16, p. 850). 



METEOROLOGY- CLIMATOLOGY. 



Monthly Weather Review ( Mo. Wail tier Rev., 32 {1904), No. 12, pp. 547-592, figs. 2, 

 charts 15). — In addition to the usual reports on forecasts, warnings, weather and 

 crop conditions, meteorological tables and charts for the month of December, 1904, 

 recent papers bearing on meteorology, etc., tins number contains the following arti- 

 cles and notes: 



Special contributions on Recent Additions to the Weather Bureau Library, by 

 II. II. Kimball; The New " Meteorologia " by A. I. Woeikof, by S. Ilanzlik; The 

 Results of the "Work Done at the Aeronautical Observatory at Tegel, near Berlin, 

 from October 1, 1901, to December 31, 1902, by S. Ilanzlik; Evaporation Observa- 

 tions in the United States (illus. ), by II. H. Kimball (see p. 956); Perpendicular 

 Cold Air Movements as Related to Cloud Velocity, by W. A. Eddy; A Cloud Phe- 

 nomenon at Omaha, Nebr., by W. F. Riggs; The Introduction of Meteorology into 

 the Courses of Instruction in Mathematics and Physics, by C. Abbe; The Storm and 

 Cold Wave of December 24 to 29, 1904, by W. J. Bennett; and Some Relations 

 Between Direction and Velocity of Movements and Pressure at the Center of Ellip- 

 soidal Cyclones (illus.), by S. Hanzlik; and notes on William Norrington, nitrogen 

 in rainwater, the vapor pressure of mercury, Weather Bureau men as instructors, 

 kite work by the Blue Hill Observatory and the United States Weather Bureau, and 

 storm on the Pacific Coast, December 27-31, 1904. 



Meteorological observations, A. O. Leuschner et al. ( California Sta. Rpt. 1904, 

 pp. 182, 133, 197, 209, fig. 1). — A summary of observations at Students' Observatory 

 at Berkeley on temperature during the period from September, 1902, to June, 1904, 

 is given, with a record of observations at the same place during the year ended June 

 30, 1904, on pressure, temperature, precipitation, relative humidity, cloudiness, and 

 direction of the wind. Observations at the Santa Monica and Chico forestry sub- 

 stations for the same period are also reported. 



Meteorological observations, W. A. Stocking, Jr. (Connecticut Storm Sta. Rpt. 

 1904, pp. 241-248). — This is a record of observations on temperature, pressure, 

 humidity, precipitation, and cloudiness during each month of 1903 at Storrs; rainfall 

 during the six months ended October 31, 1903, at 22 places in Connecticut; monthly 

 mean temperature and monthly precipitation for 15 years (1888-1902) ; and dates of 



