METEOROLOGY CLIMATOLOGY. 123 



1S97 the peas grown on the plat receiving ammonium snlphate produced few tubercles 

 upon their roots, and these were scattered upon the lateral rootlets. Those plants 

 oTOwn on plats receiving potash fertilizers produced abundant tubercles, which were 

 aggregated close to the tap root, and similar results were obtained with superphos- 

 phates. Under the iniiuence of large amounts of lime the tulxTcles were less abun- 

 dant, but their volume was greatly increased, many of them attaining a diameter of 

 10 mm. The action of the sodium chlorid seems to ))e toward the formation of a few 

 small tubercles. 



Each year the seed have been saved fi'om each plat separately and reseeiled upon 

 the same, the experiment being carried on continually. In 1901 the peas gathered 

 from the plat which had constantly received nitrogenous fertilizers seemed to have 

 lost their ability to form root tubercles in that soil. When seeded in ordinary soil, 

 however, they readily produced root tubercles, showing that after 5 years tliere had 

 been no important biological change in the plants. For the other jdats, seeds harvested 

 year after year and planted again showed no important differences. The action of 

 the hairy vetch and the cultivated vetch did not differ materially from that shown 

 by the peas. With the yellow lupine, however, the results are somewhat different. 

 The well-known action of lime upon this plant was plainly shown in the plats which 

 received that fertilizer. Comparisons were made with beans of several varieties. In 

 the case of the beans, nitrogenous fertilizers seem to stimulate the formation of root 

 tubercles, while tending to i-estrain their development with the other leguminous 

 species studied. The addition of superphosi)hate tends to stinudate the production 

 of tubercles upon peas, hairy vetch, common vetch, and particularly on the yellow 

 lupine, but it has a contrary effect with beans. 



METEOROLOGY CLIMATOLOGY. 



Eclipse meteorology and allied problems, F. H. Bigelow {U. S. Dept. Agr., 

 Wadhcr Bvrmu Bui. I, pp. 166, j)Is. 3, fgs. 24, charts 16). — This is a report of obser- 

 vations during the total solar eclipse of May 28, 1900, on the effect of the moon's 

 shadow on the earth's atmosphere. It is based upon the records of an expedition to 

 Newberry, S. C; upon the special meteorological observations at 62 Weather Bureau 

 stations located within 500 miles of the center of the track of totality; upon a con- 

 siderable nund:)er of voluntary observations made within the belt of the undjra, in 

 accordance with instructions from the Weather Bureau; and upon a study of various 

 problems in solar and terrestrial meteorology. "As the outcome of this work there 

 have been made special studies, (1) on the apparatus planned to ol>tain a large-image 

 picture of the mner corona, w'hile yet employing a telescope of comparatively short 

 focus; (2) on the shadow band phenomena, which appear to be due to meteorolog- 

 ical conditions exclusively, and are not to be associated with diffraction on the edge 

 of the moon, and (3) on the variations of the pressure, temperature, vapor tension, 

 and wmd caused by the passage of the shadow cone, together with a computation on 

 the number of calories of heat absorbed per kilogram of air." 



Meteorological observations, J. E. Ostr.\nder, H. L. Bodfish, and S. C. Bacon 

 {Mdxmchmetts ^Ui. Met. Bnl.'<. 160, 161, 162, pi). 4 each). — Summaries of observations 

 on pressure, temperature, humidity, precipitation, wind, sunshine, cloudiness, and 

 casual phenomena during April, May, and June. The data are briefly discussed in 

 general notes on the weather of each month. 



Report of the department of meteorology and meteorological summary, 

 C. H. Pettee {Nexo Hampshire Sta. Bxd. 87, pjp. 130-133) .—K brief report is given of 

 the operations of this department of the station during the year, accompanied l)y a 

 monthly and an annual summary of observations on temperature, precipitation. 



