CHAP, v.] 



DEEP-SEA SOUNDfNG. 



211 



much time and are too valuable to admit so large 

 an average of losses. ^ 



J 



Pio. 3S.— Brooke's Deep-Sea Sounding Apparatus. 



About the year 1854, J. M. Brooke, passed-mid- 

 sbipman in the U.S. navy, a clever young officer who 



p 2 



