« PrécédentContinuer »
inches, and hence the circumference is 440 inches; also, the entire angle at the centre, opposite the circumference, is 360° or 21,600. If then 440 inches subtends (or is opposite) an angle of 21,600′, 5% inch will subtend an angle of 31′ (nearly).
2. The stellar magnitudes of Jupiter's sixth and seventh satellites are given as 14 and 16, respectively. (See "Handbook" for 1917, p. 52).
THE OBSERVATORY CLUB, OTTAWA
The staff of the Dominion Observatory, at Ottawa, numbering at present 13, several being overseas, inaugurated last year a Club, for the discussion of subjects of special interest to its members. It has resulted in lasting good to its members- and of interest to visitors, as the present writer can testify. Klotz has sent me the program for the present season. follows:
It is as
TWO NEW COMETS IN 1918
The number of new comets discovered in 1918 was exceptionally small, undoubtedly because the world was busy with
The first was discovered by William Reid, in South Africa,
8° 10', near a
It could not be
on June 12, 1918, in R.A. 9h 16m 36s, Decl. Hydræ, with daily motion 48' due south. observed from the northern hemisphere and no further observations have been published.
The second was discovered by R. Schorr, at Hamburg, Germany, on November 23, in R.A. 4h 12m 9s, Decl. + 11° 35', not very far from Aldebaran in Taurus. It was of 14th magnitude, had already passed perihelion and was growing fainter.
Wolf's periodic comet was observed by Jonckheere, at Greenwich, on July 9, 1918, on its fifth return since it was discovered in 1884.
Borrelly's periodic comet was observed by Fayet, at Nice, France, on August 7, 1918. This was its third re appearance.
PROPER MOTION BY THE STEREOSCOPIC METHOD
On page 326 of this Journal for 1918 was printed a quotation from the English Mechanic in which it was claimed that Sola, of Barcelona, Spain, had invented a new instrument by which the proper motion of Barnard's 'runaway' star had been determined from two negatives taken only twenty hours apart.
In a note to the present writer Professor Frank Schlesinger, of the Allegheny Observatory, states that the above report cannot be correct, since the motion in twenty hours is 0025 and no plate (on the scale that he is employing) will reproduce so small a change, to say nothing of measuring it."
C. A. C.
THE ROYAL ASTRONOMICAL SOCIETY OF CANADA
Honorary President-J. S. PLASKETT, B.A., D.Sc., Victoria, B.C.
First Vice-President-J. R. COLLINS.
Second Vice-President--OTTO KLOTZ, LL.D., D.Sc., F. R. A.S,, F. R.A.S.C.
Recorder--A. F. HUNTER, M.A.
Curator--ROBERT S. DUNCAN.
Council-- The above Officers, and the following members:--WM. BRUCE, J.P., Hamilton; Rev. I. J. Kavanagh, M.A., D.Sc., S.J., Montreal; Rev. Dr. MARSH, F.R.A. S., Pickering; Sir JOSEPH POPE, K.C.M.G., Ottawa; JOHN SATTERLY, M. A., D.Sc.,; STUART STRATHY; Dr. W. M. WUNDER, Toronto; and Past Presidents JOHN A. PATERSON, K. C., M.A.; SIR FREDERIC STUPart, F.R.S.C.: Professor A. T. DELURY, Professor LOUIS B. STEWART, ALBERT D. WATSON, M.D; and the presiding officer of each Centre as follows: J. J. MCARTHUR; W. A. LOGAN, C.E.; J. M. WILLIAMS; JAMES DUff, M.A.; H. R. KINGSTON, M.A., Ph.D.; R. R. GRAHAM, B. A., B.S.A.; W. S. DREWRY, and MGR. C. P. CHOQUETTE, M.A., Lic. Scs.
Vice-President--C. A. BIGGER.
President--J. J. MCARTHUr.
Secretary--R. M. MOTHERWELL.
Council - DR. W. BELL DAWSON, G. B. DODGE, THOS. FAWCETT.
Local President--W. A. LOGAN, C. E.
Vice-President-T. A. S. HAY.
Secretary-Treasurer-T, C. ELLIOT,
Council--H. O. FISK, C. E.; DUNCAN WALKER, B.A.; D. E. EASSON, B.A.Sc.; HENRY CARVETH,
Honorary President-WM. BRUCE, J.P.
Local President--J. M. WILLIAMS.
Secretary-T. H. WINGHAM, B.A. Sc.
Vice-President--W. A. ROBINSON.
Council J. J. EVEL, REV. J. J. MORTON, MISS I. M. WALKER.
Hon. President- DR. W. W. ANDREWS.
Hon. Vice-President-N. MACMURCHY, B.A.
President-JAs. Duff, M.A.
Vice-President-Mr. TRELEAVEN, B.A.
Secretary-Treasurer-W. G. SCRIMGEOUR, M.A.
Auditor-J. E. CAMPBELL, B.A.
Council--T. H. BISSONNETTE, B. A.; E. R. MURRAY, H. S. MACCLUNG, B.A.; Miss E. D. CATHRO, B. A.
President--H. R. KINGSTON, M.A., Ph.D.
Vice-President—J. H. KOLB,
Secretary-Treasurer-PROFESSOR O. T. ANDERSON, M.A.
Council--C. E. BASTIN, B.A.; J. W. HARRIS, C.E., D.L.S.; F. POWELL, MRS. HOWEY, PROFESSOR L. A. H. WARREN, M.A., PH.D., F. R.A.S.; Rav. FATHER J. BLAIN, S.J.
Honorary President--JAMES DAVISON, B.A.
and Vice-President--J. MCNIECE, B.A.
Recorder--J. W. CHARLESWORTH, B.A.
Council--MRS. J. J. DREW, MISS MARY MILLS, F. A. Graesser, Prof. W. H. DAY, M.A.; J. M. TAYLOR, Sr.; WM. LAIDLAW, COL. A. H. MACDONALD. and H. J. B. LEADLAY.
Honorary President-DR. J. S. PLASKETT, B. A., D.Sc., Victoria, B.C. President--W. S. DREW"y, C.E.
Secretary--G. S. A CTAVISH.
Vice-President-- J. E. UMBACH.
Auditor-THOMAS SHOT Bolt.
A. W. MCCURDY. F.
Council--K. M. CHADWICK, REV. ROBERT CONNELL,
NAPIER DENISON, F. C. GREEN, DR. D. YOUNG and J. B. SHENTON.
President--MGR. C. P. CHOQUETTE, M.A., Lic. Scs.
Vice-President--H. E. S. ASBURY
Secretary Treasurer--REV. W. T. B. CROMBIE, M.A., B.D.
Council--GEO SAMPLE. JAMES WEIR, B.Sc.; LT. COL. R. WILSON, LT.-COL. W. E. LYMAN, B.A.; JouN CORWAY.