\^^\ 



CIENCE 



[Entered at the Posi-Offlce of New York, N.Y., as Seoond-Clasi Matter.] 



A WEEKLY NEWSPAPER OE ALL THE ARTS AND SCIENCES. 



Sevknth Year. 

 Vol. XIII. No. 320. 



NEW YORK, March 22, i5 



Single Copies, Ten CENib. 



S3. 50 Per \ K.AR, IN Advancb. 



THE GREAT FALLS, ON THE PASSAIC RIVER, IN PATERSON, N.J., 15 MILES FROM NEW YORK, 

 SHOWING WASTE OF WATER INTO THE SEA. [See p. 208.] 



