Recent- Explorations in South Australia. 59 
sary precaution in the drawing of the mountains, from the well 
known but not entirely authentic map of Mr. Baily.” 
Rail Road and the proposed Atrate canal are also given. In the 
outlines of the coast, Mr. Codazzi has based his chart on the 
surveys of the English engineer, Mr. Kellet, published in 1854, 
With the introduction, however, of some changes. Dr. Kiepert, 
who is conscientiously exact in all his publications, is forced in 
& note which accompanies this map, to express his doubts as to 
the reliability of the delineations of the interior of the country. 
third map, recently issued by the same editor and pub- 
lisher, is entitled “Tropical America North of the Equator,” 
and comprises the West Indies, Central America, Mexico, New 
Granada, and Venezuela. It is composed with the help of all 
cartographic and literary materials hitherto published. One of 
the sheets contains a subordinate map of the central part of the 
Mexican Republic on an enlarged scale. The entire wotk is 
executed with great clearness and precision. 
ECENT EXPLORATIONS IN SOUTH AUSTRALIA.— We condense 
from the Berlin “ Zeitschrift fiir allgemeine Erdkunde” for Au- 
gust, 1858, the following interesting notice of late explorations in 
South Australia. In the year 1857 two explorations were made 
under the auspices of the Colonial government into the northern 
part of the mountainous region which extends from Spencer 
Gulf north-easterly and nearly to the bottom of the vast curve 
formed by Lake Torrens. This singular lake, now supposed to 
consist of immense morasses, salt pools, and shallow expanses 
of fresh water—so shallow as to be dry during a portion of the 
year—appears to commence to the northward of Spencer Gulf, 
(with which it is partially connected by a valley of towards 400 
yards in length, and, extending northerly three degrees, to 
Sweep N.E., E., S.E,, then southerly in 140 E. long. to a point 
