525 
seen at some distance to the north. Four miles short of Flanagan’s or “ The Springs” 
Camp, the divide between the Gilbert and Norman waters is crossed. This watershed, 
although marked on the Colony Map as the prolongation of the Gregory Range, is a 
quite insignificant elevation, composed of gritty Desert Sandstone, resting on granite 
and 25orphyi’y, at probably leas than seven hundred feet above the sea-level.* 
Opposite Flanagan’s, the eastmost camp on the Croydon Gold Field, are “ The 
Springs.” These well out with a volume which supplies a five-head battery at the base 
of a cliff of about thirty feet of Desert Sandstone, which rests on granite about one 
hundred feet above the camp. This sandstone is plentifully charged with impressions of 
marine Mollusca. 
The same tableland extends for about three miles to the south-west to the 
“Alluvial Springs” (near Goldfield Homestead Area No. 120), and how much further I 
do not know. The springs amply supply a vegetable garden below the cliffs, owned by 
a Croydon Company. A little alluvial gold is found in gullies draining from the sand- 
stone tablelands near the “ Alluvial Springs.” 
About one mile north-east of the King of Croydon Claim, the “ Eichmond” auri- 
ferous reef occurs in granite country, and its cap is covered by a horizontal cake of 
Desert Sandstone, at a level of about one hundred feet above the surrounding flat 
country. The lowest bed is a very coarse conglomerate, about twenty feet in thickness, 
and above it is a thin bed of j;<asf-vitrified sandstone with indistinct plant-remains. 
On the divide between Behnore and Cork-tree Creeks, about two and a-half miles 
east of Croydon Town'ship, the “ Connaught Eanger” and another auriferous reef, in a 
country rock of semi-vitreous quartz porphyry, are capped by a cake of Desert Sandstone 
named Mount Angus, consisting of two beds, the upper of yztasi-vitrified white 
Sandstone with plant-remains, and the lower of yellowish gritty sandstone with 
mollnscan fossils. 
North of Belmore Creek, above the mouth of the Mountain Maid Creek, there 
are three small outliers of Desert Sandstone. These, especially the two easternmost ones, 
contain plentiful but imperfect impressions of jointed bamboo-like plants. I was informed 
that ferns have been obtained from the westernmost of the three, and searched for them, 
but without success. 
The summit of the ridge between the Queen of Croydon Reef and the Pioneer 
Machine on Belmore Creek is capped by sixty feet of horizontal white sandstone (De 
Vis Hill). In this sandstone, which is in part ^M«s«-vitreou8, 1 saw some impressions of 
Pelecypoda, which, however, were not in sufficiently good order to be worth collecting, 
and impressions of branches of trees up to four feet in length. 
The True Blue Reef, in granite country, north of Croydon, is worked up to the 
l>ase of the Desert Sandstone. At the Prospecting Claim there are only a few feet of 
sandstone on the cap of the reef, while on the “Numbers,” to the south-east, the sand- 
stone rapidly deepens. The diagram section (PI. 45, fig. 2) from north-west to south- 
east across the True Blue Hill shows the relation of the Desert Sandstone to the granite. 
It will be observed that the beds of the former overlap. The uppermost bed is quasi- 
vitreous, and contains twig-impressions and ferns, viz . — Didymosorus (?) yleichenoides, 
Old. and Mor., var.f 1 received from Mr. Spencer, Manager of the Queensland National 
Hank at Croydon, some handsome specimens of this fern, now in the Geological Survey 
Museum, 
* Geological Observations in the North of Queensland, 1886-7. By R. L. Jack. Brisbane; by 
■Authority ; 1887. 
t R. Etheridge, Junr., Additions to the Fossil Flora of Eastern Australia, Froc, Linn. Soc. 
s. Wales, iii. (2), PI, 38. fig. 3. 
