PASSAGE THROUGH THE STRAIT. 467 
which was followed by cold weather, in which the thermometer 
stood at 12°. 
The following Table shews the mean temperature and pres- 
sure as registered at the Observatory at Port Famine in the 
Strait. 
1828. Temperature,| — Pressure. 
| 
LN SLTTENAY hs an ogdomnoe 51+] 29-40 
March setsce teres ser 49-4 29-64 
ADH sna de ddesod tat 41-2 29 hifi 
WVRenvamei sare tre rereuerenasterer se 35:5 29°30 
SUNG b ac eevee states 6 32:9 29°28 
Ute cetedy Ses eeBib see 33:0 29°57 
ANIBIR? Saisie bmgeeues oe 33°2 29°28 
The difficulties that present themselves to Navigators in 
passing round Cape Horn, as well from adverse winds as the 
severe gales and heavy sea to which they are exposed, are so great, 
that the Strait of Magalhaens has naturally been looked to as 
a route by which they may be avoided. Hitherto no chart has 
existed in which much confidence could be placed ; but by the 
present survey, the navigation through it, independent of wind 
and weather, has been rendered much easier; since a correct 
delineation of its shores, and plans of the anchorages, have 
been made ; and in the preceding pages, sufficient descriptions 
_ of them have been given to assure the navigator of his place, 
and furnish him with advice as to his proceedings. ‘The local 
difficulties therefore have been removed ; but there remain much 
more serious ones, which I should not recommend a large, or 
even any but a very active and fast-sailing square-rigged 
vessel to encounter, unless detention be not an object of im- 
portance. 
For a square-rigged vessel bound through the Strait, the 
following directions will be useful :— 
Z2u2 
