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Journal and Proceedings of The Royal Society of New South Wales Volume 112 Parts 3 and 4 [Issued December, 1979]


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Journal and Proceedings of
The Royal Society of New South Wales

Volume 112 Parts 3 and 4 [Issued December, 1979]

CONTENTS


AUTHORS & TITLES

PAGES

Part 3

Aldis, Geoffrey K. and Hill, James M., Analysis of a Chiropractor's Data

93-99

King, D.S., Astrometric Determination of Membership Probabilities in Galactic Clusters

101-104

Bahadur, K. and Kumar, S., Effect of Formaldehyde on the Abiogenesis of Nuclei Acid Bases in the Irradiated Mixtures of Jeewanu and Protocells

111-113

Loughnan, F.C., Evans, P.R. and Walker, M.C., Magnesian Calcite at Macquarie Rivulet Delta, Lake Illawarra, New South Wales

115-120

Lindley, I.D., An Occurrence of the Camerate Crinoid Genus Eumorphocrinus in the Early Carboniferous of New South Wales

121-124

Part 4

Fergusson, Christopher L., Pre-Cleavage Folds in the Mid-Palaeozoic Sequence Near Capertee, New South Wales

125-132

Taylor, G.H., The Response of Coal to Geological Stimulus
[Clarke Memorial Lecture for 1979]

133-138

Bracewell, R.N., Life in Outer Space
[Pollock Memorial Lecture, 1978]

139-142

Lassak, Erich V., The Volatile Leaf Oils of Three Species of Melaleuca

143-145

vo. 112 pt 3, pp. 93-99

Analysis of a Chiropractor's Data


Geoffrey K. Aldis and James M. Hill

Abstract. Data from a chiropractor is studied with the view to obtaining a mathematical model of the alteration in the position of the atlas bone due to adjustment. The particular chiropractor believes that the patient's illness, for example low back pain, is primarily due to misalignments of the atlas bone, which he attempts to correct by applying a mechanically produced force. We find that there is considerable variation in the response of individual patients, indicating that a 'population' model is not applicable. In attempting to restore the atlas bone to its 'normal' position, the chiropractor takes 'before' and 'after' X-rays, from which the displacements of the bone due to the applied force are measured. Statistically significant differences in before and after adjustment measurements are demonstrated for both the total sample and also when the sample is broken down into age, sex and adjustment type categories. It was found that there was not a transition from small displacements of the atlas in the young to larger displacements in the old.

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vol. 112 pt 3, pp. 101-104

Astrometric Determination of Membership Probabilities in Galactic Clusters


D.S. King

Abstract. Photographic measurement of the relative proper motions in the region of a glactic cluster are used to assign a probability of membership to each star. The probability of membership is dependent upon the weights given to the results and the determination of the distribution parameters. A more objective method is given for both.

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vol. 112 pts 3-4, pp. 111-113

Effect of Formaldehyde on the Abiogenesis of Nucleic Acid Bases in the Irradiated Mixtures of Jeewanu and Protocells


K. Bahadur and S. Kumar

Abstract. The effect of formaldehyde has been studied on the abiogenesis of nucleic acid bases in a setrilised aqueous mixture consisting of ammonium molybdate, diammonium hydrogen phosphate and biological minerals. It was observed that the formation of nucleic acid bases increases with increasing concentration of formaldehyde up to 60 ml formaldehyde/200 ml mixture and thereafter decreases. Jeewanu, the protocells were formed by exposing sterilised aqueous mixture containing ammonium molybdate, diammonium hydrogen phosphate, biological minerals and formaldehyde to sunlight (Bahadur and Ranganayakee, 1970). The presence of acid nucleic bases (Ranganayaki, Raina and Bahadur, 1972), amino acids (Bahadur, Verma and Singh, 1974), sugars (Raina, 1973) and lipids (Singh, 1974) have been detected in the particles as well as in the environmental medium of these mixtures. Formaldehyde has been used as a source of carbon in the above mixture. The main reason for choosing formaldehyde as a source of carbon is that formaldehyde can be very easily synthesised by exposing an aqueous solution of carbon dioxide to ultraviolet light (Garrison, Morrison, Hamilton, Benson and Calvin, 1957). Moreover formaldehyde has been detected in large quantity in interstellar space (Synder et al. 1969)

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Vol. 112 pt 3, pp. 115-120

Magnesian Calcite at Macquarie Rivulet Delta, Lake Illawarra, New South Wales


F.C. Loughan, P.R. Evans and M.C. Walker

Abstract. A thin, indurated carbonate layer comprising calcium and magnesium in varying proportions, is developed in the near subsurface of a barren, salt-encrusted zone and adjacent algal mat-covered flat at Macquarie Rivulet delta, Lake Illawarra. The presence of this layer appears anomalous since not only is the climate of the area humid with an annual rainfall in excess of 1100 mm, but further, the associated sediments contain abundant decomposing organic maqtter and are essentially devoid of shell fragments and other detrital carbonate grains. In an attempt to understand the geochemical conditions that have given rise to the precipitation of the carbonate layer, analyses have been made of the groundwaters and algal mats in addition to the associated sediments. It is concluded that although the mechanism of formation of the carbonate layer is incompletely understood, the algal mats may have excercised a controlling influence.

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Vol. 112 pt 3, pp. 121-124

An Occurrence of the Camerate Crinoid Genus Eumorphocrinus in the Early Carboniferous of New South Wales


I.D. Lindley

Abstract. Eumorphocrinus elongatus n.sp. from the Early Carboniferous of the upper Hunter Valley in New South Wales marks the first record of the primitive actinocrintid (Crinoidea: Camerata) genus in the Southern Hemisphere. Eumorphocrinus has been previously known from the early Viséan of the British Isles and from the early Osagean of Arizona.

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Vol 112 pt 4, pp. 125-132

Pre-Cleavage Folds in the Mid-Palaeozoic Sequence Near Capertee, New South Wales


Christopher L. Fergusson

Abstract. Meridional folds with well-developed axial plane cleavage are superimposed on earlier east-northeast trending golds in a Silurian-Devonian flyschoid and volcanoclastic sequence in the northeast Lachlan Fold Belt. The early folds have no associated cleavage and it is suggested that they may be gravity glide structures. The meridional folds are generally upright shallowly plunging structures that are part of the regional deformation of the Siluro-Devonian Hill End Trough.

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Vol 112 pt 4, pp. 133-138

The Response of Coal to Geological Stimulus


G.H. Taylor

[Clarke Memorial Lecture, 12th July, 1979]



Abstract from text
...
Clarke, who lived through the latter part of the Industrial Revolution could have had no doubt as to the importance of coal. Now, a century after his death, we have again discovered how fortunate we are in having resources of coal which are large in relation to our population. As we are forced to think more seriously of our future energy needs we are becoming more conscious of the wide variety of both brown and black coals which occur in Australia. This lecture is principally concerned with some of the reasons for this great variation and especially with the response of coal to geological events.

I have used the word 'stimulus' in the title to emphasize the sensitivity of coal to changes (including comparatively small changes in geological conditions) which produce little or no perceptible response in other rocks. The variability in the properties of coal is of interest not only with regard to the material itself, but also in providing information as to the history of rocks with which coal is associated, either in seams or as a minor component. ...



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Vol. 112 pt 4, pp. 139-142

Life in Outer Space


R.N. Bracewell

[Pollock Memorial Lecture, 1978]



No Abstract: Full Text here

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Vol 112 pt 4, pp. 143-145

The Volatile Leaf Oils of Three Species of Melaleuca


Erich V.Lassak

Abstract. The compositions of the steam-volatile leaf oils of Melaleuca adnata, M. nodoea and M. thymifolia were determined by the use of gas-liquid chromatography and mass spectrometry. The oils of M. adnata and M. nodosa were characterised by high proportions of 1,8-cineole. M. thymifolia has been shown to exist in a α-pinene rich form.


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