Bull. U. S. F. C. 1896. (To face page 291 .) 
Plate XIV. 
Nomenclaiii re. 
a. SiDker. 
h. Sounding rod. 
c. Quills. 
(h Circulatiug valve. 
e. Detacher. 
/. Pill. 
g. Link. 
h. Slings. 
THE BROOKE DEEP-SEA SOUNDING APPARATUS, 
Fig. 1. Kod inserted in the .sinker .and the latter suspended to the det.acher ready for sounding. 
Fig. li. .Sectional view of the detacher in position for releasing tlie slings; it shows also the lower j)art of the 
siieciinen cup in section. 
