AMERICAN 
JOURNAL OF SCIENCE AND ARTS. 
& 
[SECOND SERIES.] 
Arr. I.—On a new Sounding Apparatus for Deep-sea Sounding ; 
by Prof. W. P. oe Assistant U.S. Coast Survey.— 
With a Plate. 
[Published in this Journal by permission of the Treasury Department. ] 
a ee addressed to Prof. A. D. Bacug, Supt. U. S. Coast Survey, dated 
S. Coast Survey Office, Washington, D. C., April 6, 1859. 
Dear Sir,—In my report to you of May 31, 1858, I had the 
honor of presenting the results of an investigation of the laws 
of ae of heavy bodies in the ocean, under the conditions 
re ae se noe de sea sounding. 
: that investigate was to ascertain and develop 
fully oo actin of failure and error in deep-soundin d to 
devise a more certain and reliable mode of measuring the depth 
of the ocean, in the off-shore hydrogra oy, of the Coast Survey, 
and especially in the swift onion of t If Stream. 
_L have now to present for your further consideration a sound- 
ing apparatus based upon the developments given in my former 
rt, and the result of further study and experiments on the 
ubject. 
distinguishing feature of the method herein described, 
neat exceedingly simple in its eepeston, has never before 
proposed, inasmuch as its necessity could hardly have been 
fat, sadighot a careful analysis of the circumstances of descent of 
the sounding lead and line. 
method of sounding heretofore employed, the influence 
of the friction of the water upon 2 ged line, or ‘‘endwise resis’ 
‘SECO No. &2—JULY, 1 
