Notes on samples of limestone collected from three caves on the Nullabor Plains, the Koonalda, the Abrakurrie, and the Weebubbie, and from the surface crust in the vicinity of the caves.

The Lakes Entrance Oil Shaft is situated in allotment 21, Parish of Colquhoun, about 2 miles north-east of Lakes Entrance township. The shaft was sunk with the object of developing, by means of low pressure mining methods, the oil-bearing beds known to exist in the lower portion of the Tertiary basin in the Lakes Entrance area. It is estimated that, during mining operations, approximately 12,000 tons of Tertiary sediments were excavated. Consequently a unique opportunity was afforded the palaeontologist and geologist to study the stratigraphic sequence of Tertiary beds in the Lakes Entrance area. During visits paid to the scene of operations, extensive collections of fossiliferous material were made by the author. This report comprises notes on the scope of the micro-palaeontological investigation, the stratigraphy and the palaeontology of the Lakes Entrance Oil Shaft.

In accordance with instructions an inspection was made of the Blue Spec Mine, Nullagine, from 22nd to 27th October. A survey was made of development work since Mr. Sullivan's visit on 20th September. This entailed a survey of the 3 level drives off No. 2E. and No. 2W. winzes and the new cross-cut from the main shaft at No. 3 level. The new shaft and cross-cut on M.L. 266 were mapped and the lode was sampled and assay results obtained. The water supply problem was investigated and a site chosen for a new domestic supply bore. Three accompanying plans are included.

For nearly nine months of the year the river proper is confined to a narrow channel two to three hundred feet wide. During the remainder of the year, however, the river is subject to periodical floodings resulting from heavy tropical rain on its water-shed and for periods of a week of more at a time the low level bridge is covered by flood water. The dislocation of rail traffic which results from these periodical floodings has been a matter of serious concern to the Queensland authorities for many years and a decision was made to construct a high level rail and road bridge to replace the existing structure. Construction was commenced, but before it proceeded far, it was considered desirable that the depth of the bedrock, previously examined, should be established without doubt. In view of the uncertainty of the depth to be drilled and the very considerable difficulty in drilling through alternating layers of drift sand and boulder wash, a request was made by the Co-ordinator General of Public works for Queensland for a geophysical investigation of the site. A survey was carried out by the geophysical section of the Commonwealth Bureau of Mineral Resources during August and September, 1947. The investigation of the results is far from complete but the seismic method gave such concise results that this preliminary statement is justified. Geology, geophysical methods, results, interpretation, and testing are discussed in this report.

Notes on a small collection of opalized shells, bone fragment and specimen of precious opal from White Cliffs.

Report on a preliminary micropalaeontological examination of the samples, submitted by the Frome - Broken Hill Co. Pty. Ltd., on November 3rd, 1947, from the Northern Flinders Range area. The examination was made with a view to giving assistance to the reconnaissance work now in progress.

Palaeontological note on a rock sample from a bore which was sunk a few feet into a mud island, west of Pelican Point, Lake Victoria, Gippsland.

The report is the result of a five weeks survey of radio-active occurrences in the Marble Bar District. The principal deposits of alluvial monazite were checked and two new radio-active occurrences in granitic rocks were reported. Accompanying plans of the Marble Bar and Wodgina areas are included.

Bauxite deposits in the vicinity of Gelliondale were investigated. The report comprises notes on the locality, geology, volume, and nature of the bauxite deposits.

An area of about 190 acres lying within the boundaries of Allotment 26D, Budgeree, County of Buln Buln was taken up for prospecting purposes on 21st May, 1947. The topography, general geology of the area, and the occurrence, volume and grade of the bauxite bodies, are discussed in this report. Three accompanying plans are included.