Vv CONTENTS. 
PROCKEDINGS OF THE SECTIONS. - 
[An asterisk signifies that the title only is printed. ] 
Section A.—ASTRONOMY, MATHEMATICS, AND PHYSICS. 
FRIDAY, 7TH JANUARY, 1898. 
Address by P. Baraccut, F.R.A.S., &c., President of the Section ... 
Monpay, 10TH JANUARY, 1898, 
*], Four Theorems in Spherical Harmonics. By C. CoLErmpeE 
Farm; Bsc. .. 
2, Some Expressions for the Component of the Magnetic Force 
Perpendicular to the Axis in the Interior of Solenoids. Bo C. 
COLERIDGE Farr, B.Sc. 
3. On Magnetic Hy steresis Losses in n Feebly Magnetic and in 
Diamagnetic Substances. By Miss F. Martin and Professor 
R. THRELFALL, M.A. 
4. The Trigonometrical Survey of New South ‘Wales, ‘with mention 
of Similar Surveys in the other Colonies. By TB, FURBER, 
RAGS: 5 Ua. 
5. The Description of a New Tide- predicting “Machine. By Captain 
A. INGLIS 
6. The Tides of South Australia. By R. W. CHAPMAN, M. Ne 
B.C.E., and Captain A. Ineris - 
*7. Notes on the Vertical Component of ‘the Motion of the Earth’s 
Atmosphere, and an Exhibit, viz., a Wind Vane, showing 
Vertical Motions of the Air. By Major-General Scuaw, CNBa ce 
8. Experiments on Some Electrical Properties of Purified Sulphur. 
By Professor R. THrReELFALL, M.A., and J. BERNARD ALLEN, 
B.Sc. ie es x A: 
TuESDAY, llrH JANvuARy, 1898. 
ao: Results from Various-sized Rain-Gauges. By H. C. KIpp1e, 
10. Cloud oinveneaoe in Victoria. By P. Baraccut, F.R.A.S.... 
11. The Testing of Reflecting Surfaces. By P. Baraccut, F.R.A.S. 
#12. A General Expression for Flow in Tubes. By G. H. Knrppzs, 
WR ASSs, Lee. 
13. The Source of the Periodic Waves which are recorded from 
time to time on the Sydney and Newcastle Tide-Gauges. By 
H. C. Russet, C.M.G., F.R.S., F.R.A.S., &. ... 
*14. Notes on Comparisons of Steel and Iron Lineal Standards for 
Geodetic Purposes. By D. M. Mairianp, L.S. ie 
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