

soi-MllNCS. 





l>I\i:S. IiKK!' SK\. 



ring, which lili in a groove in a bar of quarter-inch iron, ami 12 inch 

 in length, baring a umiill hook at one end, and a weight at th> 



In 1857, Lieutenant (now Oonumoda I!.N., was ordered 



to clieck the deep Hounding* which had been taken by the An-lk- 



<,!</[ 



hollowed and jagged BO as to bring up any portion of the bottom. This 

 can be used with cither shot or pig-iron, and on reaching the ground 

 the weight a descends and unhooks the sinker, which being left at the 

 bottom the simple apparatus is easily recovered without much strain 

 on the sounding-line. The position of the hook at the moment of 

 detachment from the weight is shown at/. 



The mult of Captain Mansell's labours can be best explained by the 

 following section (3). 



i'rul. .f | 



between Europe and North America, preparatory to the laying of the 

 Atlantic electric' cable. f'JY.i.Ki;n.U'ii, SUBICARINK]. The following (4) h 



o ^ o 5 M Cl > Cl *^ i:t ""> "^ tomi-.oooi> i- M o r. o 



--2 r, f. --25 22222SSJT2 



Scale Horizontal 254,100 fathoms 



Vortical 



8,472 



" om " ) to on, 



) 



;C inch, or 30 to 1. 



a section published )>y him, and shows in a remarkably satisfactory 

 i that the examination of the bed of the ocean at any part of 

 the globe is probably within the. power of man even with existing 

 apparatus. In no part of the Atlantic under hix nlwerration did he 

 find the depth beyond 2124 fathoms, or about 2j mili^. 



It is unnecesaary to mention more than the leading facts connected 

 with deep sea soundings. It become*, however, an act of ju- 



remark that the United Statr-' ' Ic'vcvnnient, who tnok tlin l(>nd in 

 Hounding the Atlantic, arc doing the same in iln r iiic. The United 

 States' schooniT Ki'iiniinore ('III>IT w:t* rnminNsii'iircl l,y l,ii'iitrii:int. 

 Brooke (the experienced officer \vlio invented the sounding apparatun 

 Ixsaring his name) for the purpose. 



The only other di which we snail mention are fhowbj 



Captain Sir K. L. Mct'lmtock,of II. M.S. n-.dld,.^ i,, the Northern Ocenn 



