724 



EXPERIMENT STATION KECORD. 



man}' atmosphere.-s at the base of the chromosphere, is a sufficient demonstration 

 that only the outer layers radiate. If the emission proceeded also from the depths of 

 the chromospheric ma-ss, the lines of hydrogen and some other elements would bo 

 gi'eatly widened; and if the earth's atmosphere radiated unimpeded througliout its 

 depth, its thermal changes and its radiant effects would l)e enormous. Instead of 

 this, we find the atni()si)here playing the part of a conservator of thermal energy, and 

 nuist gratefully admire the beneficent arrangement wliich i)ermits the earth to be 

 clothed with verdure and alnindant life." 



On solar changes of temperature and variations in rainfall in 

 the region surrounding the Indian Ocean. i\. and W. J. S. Lock- 



YER {Xatuiu. GJ [IDUO), So.s. IG^J, j^>p. 107-109; 1023, 'pi>- 1^8-133, 

 figs. 3; Proc. Roy. Soe. [Lcmdon], 67 {1901), No. UO, pp- ^OQ-JfSl, 

 figs. 3).- — A .study of the chemical origin of spectrum lines most 

 evidenced in sun spots at the maxima and minima periods and of the 

 rainfall of India, Mauritius, and other regions is reported. The con- 

 clusion is reached "that there is a considerable rise al)ove the mean 

 temperature of the sun around the jear of sun-spot maximum and a 

 considerable fall around the 3'ear of sun-spot minimum." An analysis 

 of the data relating to rainfall in India during the southwest monsoon 

 and in Mauritius showed that the largest amount of rain fell in India at 

 sun-spot maximum and in Mauritius at sun-spot minimum, although 

 the maximum rainfall in Mauritius generally gave rise to a secondar}^ 

 maximum in India, which therefore " has two pulses of rainfall, one 

 near the maximum and the other near the minimum of the sun-spot 

 period." All famines in India during the last 50 years and all periods 

 l)etween 1849 and 1878, w^hen the Nile was lowest, occurred in the in- 

 tervals between these two "pulses". 



Report of the meteorologist, W. H. Bishop [Delaware Sta. Rj?f. 

 1899, pj). 180-193). — Monthly summaries of observations at 6 different 

 places in Delaware on temperature, pressure, precipitation, relative 

 humidit\-, and prevailing winds during the year ended June 30, 1899, 

 and a summar}- of observations on temperature and precipitation dur- 

 ing the calendar year 1898 are given. 



The summary for 1898 is as follows: 



Aniival Kummary uf meterological observations i)i Delaware, 1898. 



Report of the meteorologist. N. Hei.me {RJiode Island Sta. Bj)t. 

 1899, pp. 199-209). — This includes general notes on the weather and a 



