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BASEDOW. Mr. BasEDow exhibited a number of sketches. of 
native rock paintings and photographs of groups of natives 
to illustrate his paper. “Descriptions of Some New Species 
of Orthoptera, collected during the Government N.W. Expe- 
dition (Central Australia)," by J. С. О. Террев, F.L.S. Mr. 
TEPPER exhibited a case of insects, being part of those col- 
lected during the expedition. “Descriptions of New Species 
of Australian Elachistide, etc." by OswaLD B. Lower, 
F.E.S. (Lond.). 
ORDINARY MEETING, JULY 5, 1904. 
JoserH C. Vzrco, М.О. F.R.C.S. (President), in the 
chair. 
Bartor.— William Taylor, St. Andrews, North Adelaide, 
and James Gartrell, of Burnside, were elected Fellows, and 
Mrs. H. R. Robinson, “Las Conchas,” Largs Bay, was elected 
an Associate. 
ExHIBITS.—Referring to the mineral monazite, a specimen 
of which had been exhibited at the last meeting, Mr. Zietz 
remarked that it was found in New South Wales. W. How- 
снім, F.G.S., exhibited a large and interesting collection of 
rock specimens and fossils from Lake Eyre district, together 
with native weapons and food products. 
PArERS.— Note on South Australian Decapod Crustacea,” 
Part i, by W. Н. BAKER. “Nudibranchiate Mollusca of 
South Australia,” by Н. BaseDow. [This paper was subse- 
quently withdrawn for reconstruction.] "Remarks on a Re- 
cent Visit to the Lake Eyre District,” by W. Howocniw, 
F.G.S. Mr. Ноууснтх described the physical and geological 
contrasts in passing from the Cambrian rocks of the Flinders 
Range to the Cretaceous of the Lake Eyre basin. The desert 
sandstone country, the sandhills and claypans, the stony 
(gibber) deserts, and the mound springs were described, 
and received illustration by numerous exhibits. The most 
remarkable mound spring met with was one known as the 
“boiling spring," situated about a quarter of a mile distant 
from Blanche Cup. It takes its name, not from possessing a 
high temperature (which is not more than tepid), but from 
its boiling action, by which the quicksand rolls and twists 
and rises above the level of the water like a huge serpent. 
The extinct mound springs are immensely larger than those 
now active. Mount Hamilton, within a quarter of a mile of 
Blanche Cup, is one of these, and is sixty feet high and a 
half-mile in circumference. The mount is composed of com- 
pact dolomitic limestone, which was precipitated from the 
spring when active. Near the centre, on the top of the 
mount, there is a shallow depression, but no water. An old 
flint quarry that had been worked by the aboriginals for their 
stone implements was also described, and an old mulga 
