In the search for oil in Queensland, Drillers Limited, a subsidiary of Oil Search Limited, Sydney, put down a deep bore at Hutton Creek near Injune, in the parish of Simmie, county of Westgrove and 60 miles north of Roma. Drilling operations, which began in 1935 and ceased in 1938 when the depth of the bore was 4,688 feet, were carried out with a Commonwealth Government plant. The major part of the drilling was done by the percussion method, but cores were taken at various depths down to 4,678 feet. No samples were received for microscopic examination until the bore reached the depth of 650 feet, but from this depth to the bottom of the bore-hole, 638 samples of cuttings and cores were examined. Findings from a study of these samples are recorded in this report.

In 1935 Mr. F. Blake of the Geological Survey of Tasmania visited Cape Barren Island in connection with the underground water supply at Franklin Village which is situated on Sanford Bay in the northwest part of the island. He collected a small sample of fossiliferous limestone which he forwarded to the late Mr. F. Chapman who was then Commonwealth Palaeontologist. No examination of the material was made at the time. Recently it came under the notice of the writer who has made a detailed microscopic examination of it. The results of the examination are recorded in this report.

No. 1 Bore, Arcadia is situated in the parish of Arcadia, county of Westgrove, 85 miles north of Roma and 40 miles north-north-east of Injune, the nearest rail town. Drilling operations extended from 1936 to 1939. The Arcadia bore it the second deep bore in Queensland (the first being Hutton Creek bore) from which a comprehensive series of samples has been examined for their micro-faunal content. This examination was carried out on 1,256 samples consisting of drill cuttings taken over every five feet and of cores taken at numerous depths below 4,112 feet.

The Sydney Harbour Degaussing Range is situated opposite Bradley Head. The purpose of the survey was twofold. First, to determine the average normal values of the vertical (Z) and Horizontal (H) force components of the Earth's magnetic field in that part of the harbour which would be occupied by a ship passing over the coils. Secondly, to measure the magnetic elements, i.e. the Declination, Inclination and Horizontal Intensity of the Earth's field at a base station conveniently situated for use by naval personnel for the purpose of calibrating Pot Magnetometers, etc. The particulars of this survey work and given in this report.

Notes on granite and structural features following an examination of the granite outcrop at Balladonia Station. A sketch plan of the outcrop is included this report.

Gibsonvale tin field is situated approximately three miles southeast of the village of Kikoira. This preliminary report was prepared following an examination of the tin field by the writer. Aspects of the general and economic geology of the field are discussed herein.

This sample of bryozoal marl from Montagu, Tasmania, was collected by Mr. F. Canavan. It contains a faunal assemblage typical of the Balcombian Stage of the Middle Miocene as found in Victoria and can be referred to Longford substage of the Balcombian.

A brief report on the occurrence of beryl on Yinnietharra Station, Western Australia was prepared following a visit to the locality in December 1948. That report referred to three deposits: 1) 0.25 to 0.5 mile N.25°W. from The Cairn; 2)0.25 mile S.60°E from the Mica King mine; 3) Rowe's mine, 2 miles southeast from Morrissey Hill. The report stated that 20 or 30 tons of detrital beryl in large pieces could be picked from the surface with ease. It was pointed out that by collecting small pieces and wider search the immediately available tonnage might be doubled. In June 1944, the first two of the above deposits were again visited, as was one on Bidgemia Station not seen on the previous occasion.

Gypsum has been found in all the states of the Commonwealth, but, as far as known at present, deposits of commercial importance are limited to New South Wales, Victoria, South Australia and Western Australia. South Australia is the major producer and provides approximately 80 percent of the total Australian production. An account of gypsum deposits and occurrence by state is given in this report.

The Curragundi Bore is situated in Portion 15, Ph. Gingham, County Benarba, 12 miles east of Four Posts No. 2 Bore and 11 miles west of Midkin No. 3 Bore. It is about 40 miles southeast of Boronga No. 2 Bore reported upon 30/5/42. The samples examined for micro-fauna were taken from the depth of 50 feet down to 2107 feet 6 inches. The results of this micro-examination are recorded in this report.