8 
quite e([ual to the tragmeuts in quartzite shortly to l)e relerred to. The shell 
substance is almost glassy transparent ; it is probably identical with the shell 
already referred to, with, the translucent fractured edges, from the collection 
of Mr. G. de V. Gipps, also lent to the Geological Survey. 
“ ]\Ir. J. E. Came informs me that the Survey Collection contained, 
previous to tlie Garden Palace lire, an Ammonite, wholly converted into 
Precious Opal, six inches in diameter ! This came from "White ClilTs, and was 
probably one of the first fossils ever obtained there.” 
1898. — The late Prof, llalph Tate descrilied two opolised shells from 
"White Cliffs as Lncina ? Bonythoni and Blatopis ? corrngata} The speci- 
mens are contained in the collection of the School of Mines and Industries at 
Adelaide, and Avill be found referred to on subsequent pages. 
1898. — At a meeting of the Poyal Society of South Australia Prof. 
Tate exhibited^ fossils from AVhite Cliffs consisting of a Peptilian humerus 
Ichthyosaurian vertebrne, wood structure, and various molluscan tests. 
1899. — Prom the Cretaceous rocks at A^andamah Creek, near Mil- 
parinka, Mr. AY. S. Dun recorded^ the folloAving fossils: — Ammonites, 
Cypriua, wood bored by Teredo, and Maccoyella Barhlyi, Aloorc, sp. 
1901. — In his recently published Avork, “ Alineral Eesources of New 
South MTales,” Mr. E. E. Pittman says : — ' 
“ The "Wallon bore is situated about twenty miles N. by "W. from 
]\Iorec, and the evidence supplied by it was quite as important as that just 
referred to. The Lower Cretaceous rocks Averc entered a short distance below 
the surface, and continued to a depth of 1,500 feet. Tliey consisted of sand- 
stones, shales, and marine limestones, and contained numerous bivaGe shells, 
such as Corlmya, MaccoycUa, and Binna. These rocks Avere succeeded in 
deptli by tlie Triassic Coal Measures, containing characteristic plant remains.” 
1901. — The last reference I haA^e to make to this portion of the subject 
is a paper by Mr. G. Giirich, of Breslau, entitled “Jura-und Devon-Eossilicn 
von AVhitc Clilfs, Australien.” Here six or more species are described or 
noted from the AVhitc Cliifs Opal-field, viz. : — 
Avicula Barklyi, Moore. T'eredina opalina, Giirich. 
Trigonia sp., cj . INFoorei, Lycett. Natica Aaariabilis, 31oore. 
Cyreua, sps. Eelemnites Kleinii, Giirich. 
* Trans. R. Soc. S. Austr. for 1897-08 (1898), XXII, Rt, 2, jip. 77-70. 
“ Trans. R. Soc. S. Austr. for 1897-08 (1808) XXII, Pt. 1, ]>. 2.S7. 
^ Ann. Rept. Dept. Mines and Agric. X'. S. AA’ales for 1808 (1899), p. 101. 
■* R. 462 (Svo. Sydney', 1901). 
^ Xeues Jahrli. f. Mimnalogie, &o., 1001, Rcil. Rd. XIA^, p. 4S4. 
