1871.] 59 {Bland. 
Within 3 miles 8. W. from Saba is the Saba bank, which forms nearly 
a parallelogram, its longest sides about 32 miles and its shortest about 20 
miles in extent, the eastern edge fringed with a narrow ledge of living 
coral, sand and rock, nearly 30 miles in length and varying in depth from 
65 to 10 fathoms. 
It is remarkable that an elevation similar to that mentioned with re- 
ference to the Virgin and Anguilla banks (less than 40 fathoms,) would 
unite Barbuda and Antigua, alsoSt. Eustatius, St. mney and Nevis, 
and convert the Saba bank into an Island. 
With respect to Guadeloupe, Dominica, Martinique, &c., the following 
particulars of soundings lately taken by the U. §. S. ‘‘ Yantic,’’? Com- 
mander Irwin, are extremely interesting : 
Between fathoms. feet. 
Antigua and Guadeloupe, Lat. 16° 40’. Long. 61° 48/. 348 == mee 
Guadeloupe and Dominica, ‘f 15° 45’. fet O12 387, 850 = 2,700 
Dominica and Martinique, Sb DO, 06/e ©. 819 20/. - 1,078 == 6,468 
Martinque and St. Lucia, £6 140 Vis 2 B19: 041) 91282 = 7,892 
St. Lucia and St. Vincent, Foch oaOts ‘Se CLS 20/1. dB46ie= 8,076 
Capt. Parsons, R. N., found on a line of soundings from St. Vincent to 
Barbados, depths of 350, 956, 1,218 in (about) Lat. 18° 057, Long. 
60° 25’, 1,211, and 147 fathoms, the greatest ascertained depth peine equal 
to 7,308 feet. 
The same officer obtained the following results from soundings between 
Barbados and Tobago, viz. : 
fathoms. feet. 
N. Lat. 18° 00/.. W. Long. 59° 40’. 300 = 1,800 
we 12° 40/. cs a 570 = 3,420 
s 12° 30’. ey 59° 50’. 780 = 4,680 * 
¢ 12° 10’. ue 60° 05’. 1,030 — 6,180 
6 11° 40/. 4 60° 10’. 1,060 = 6,860 
ff 11° 27, ve 60° 25’, 500 = 38,000 without bottom. 
I have already given the depths between Martinique and St. Lucia, that 
Islandand St. Vincent and the latterand Barbados. St. Vincent isseparated 
from the northernend of the Grenada bank, on which Grenadaand the Gren- 
adines are situated, by a narrow channel, not over, Capt. Parsons remarks, 
300 fathoms (1,800 feet) deep. The Grenadines consist of a chain of Islands 
and rocks extending for 60 miles between Grenada and St. Vincent. The 
depth found on soundings taken by the ‘‘Yantic,’’ gave on and near to the 
west side of St.Vincent, in about the Latitude of its northern end, 1,080 
fathoms (6480 feet), opposite the channel to the south of St. Vincent 594 
fathoms (3,564 feet), and along the West side, in close proximity to the 
Grenada bank, from North toSouth, 880 fathoms (5,280 feet), 801 fathoms 
(4,806 feet), 916 fathoms (5,496 feet), and 545 fathoms (8,270 feet). 
Trinidad and Tobago are on soundings (less than 100 fathoms), both 
being in fact on the submarine slope of the South American Continent, 
and the deeper water found by the ‘‘ Yantic’’ between the former Island 
and the Grenada bank, in (about) Lat. 11° 50’, Long. 61° 45’, was 386 
