March 19, 1886.] 



SCIENCE. 



255 



Island, and Connecticut. If we assume that the report of Desmond Fitz Gerald, C.E., referring to 

 rainfall increased uniformly within the limits of the Boston water-works : — 



this area, the total amount of water which fell " The water passing over our lowest dam in the 



from the clouds upon this portion of New Eng- first four days (12th-15th) was 5,120,000,000 gal- 

 land exceeded 750,000,000,000 gaUons. In this Ions, the equivalent of four inches of rain over 

 connection the following may be quoted from the the whole watershed. The maximum flow was 



