WRITE 



V/MKT YOU HftVe 



SEEN 



^^IflEFUHOF X 

 fiEEINGTHINliS 



FOR YOUNG FOLKS 



V' EDITED BY J 



. Edward FBrsELow-./ 



WMKT YOU WP^fNT 

 TO KNOW. 



?c/) , (To/O/?. 



Lampreys: A Remarkable Photograph. 



Has any one ever seen so remark- 

 able a picture as this of lampreys in 

 the act of climbing a waterfall and 

 clinging to a rock wall? The photo- 

 graph is contributed to our magazine 

 by the American Museum of Natural 

 History, at the request of Mr. John 



of hard rock. Very interesting were 

 the numerous lampreys, Entosphenus 

 tridentatus, about as long as a man's 

 arm, which were clinging to the rock 

 borders of the river, endeavoring to 

 work their way upstream against the 

 current. At one point a flat-topped 

 masonry wall bad been built to make 



FUN IN SEEING LAMPREYS WORK SLOWt.Y UPWARDS. 



Treadwell Nichols. "The Aquarium" 

 has published the following article, 

 written by Mr. Nichols in explanation 

 of the remarkable photograph. 



"In the summer of 1908 the writer 

 was employed by the U. S. Bureau of 

 Fisheries and stationed at The Dailes, 

 Oregon, where the Columbia River 

 shoots in gigantic rai)ids over ledges 



the direction of the current more favor- 

 able for the operation of a nearby sal- 

 mon-wheel, and on the side of this wall 

 hung a great mass of lampreys, moist- 

 ened only by an occasional sheet of 

 water which the swinging current sent 

 over their backs. They clung firmly to 

 the vertical surface with their strong 

 sucking mouths, and by sideways hitch- 



