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No. 13.-The lines in this spectrum are rather broad and not easy of measurement. The hydrogen lines are strong, but helium is weak, only 4472 being measurable and of about the same intensity and character as 4481 and K.
No. 14. The spectrum exhibits double lines on the plate taken October 28th. Eight lines of one component and seven due to the other were measured. When the lines are superimposed they are numerous and well defined, the type of spectrum being 45.
No. 15. The hydrogen lines and the Calcium K in this spectrum are strong and rather broad, but fairly well measurable. Numerous weak and rather broad metallic lines give fairly accordant results among themselves and agree with the values obtained from the hydrogen lines.
No. 16.-There are many rather ill-defined lines in the spectrum of this star, which look of fair quality under the low magnifying power of an eyepiece, but which are very difficult to set on under the microscope of the measuring engine.
No. 17. This spectrum is somewhat similar to No. 15 as regards the character of the lines. Fewer metallic lines show and the measures depend on the broad hydrogen, 4481, and K.
No. 18. The hydrogen lines, together with a very faint calcium line and a faint magnesium, are all that were seen in the spectrum. The definition of the hydrogen lines is fair and the accordance of the velocities from the various lines very good.
No. 19.—The numerous metallic lines in this spectrum are weak, broad and unsuitable for accurate measurement. The hydrogen lines, 4481 and K, are, however, strong, fairly well defined and agree well among themselves, so that the resulting velocity values may be considered reasonably reliable.
No. 20. This spectrum contains numerous good lines for measurement, the best being the hydrogen series, which, though strong, have sharply defined edges. The line 4481 is good. K especially sharp, and the silicon pair,, 4128, 4131, stand out very prominently and probably form the "peculiar" character of the spectrum.
No. 21. This star promises a very interesting spectrum. The velocities given in the table result from helium and silicon lines. The hydrogen lines give about the same or larger range, but are at least ten kilometers more negative. The
calcium K line is about thirty kilometers to the violet and seems to give a constant velocity. For the five plates in order the hydrogen lines give +9.4, -2.6, +0.6, + 11.5. — 17,1 km., and the calcium lines 10.3, - 12.3, - 11.7,
8.3 km. The lines are of good quality.
No. 22. Hydrogen and 4481 are the best lines in this spectrum and the measures depend on these lines. K is broad and rather weak and a few faint, broad metallic lines are visible. No. 23.-The spectrum of this star is very much the same as No. 18, the calcium K line being, however, much stronger.
No. 24. Although the hydrogen and metallic lines in this spectrum are broad, the measures generally are in good agreement, The second spectrum was measured on one plate and its presence probably accounts for the width of the lines. No. 25. This star is listed in Harvard as of type Ao. The helium lines are quite measurable on the spectrograms taken here, and the silicon lines 4128 and 4131 are prominent. The calcium line K seems to give a smaller range than do the other lines. The spectrum is of good quality for measurement. No. 26. Besides the hydrogen lines, which, though strong, are sharply defined, and the sharp silicon pair 4128, 4131, this spectrum contains numerous well defined metallic lines and is well suited for accurate measurement. Although the range of velocity is small, measures of similar constant velocity stars indicate its undoubted reality.
No. 27. This spectrum is of excellent quality for measurement, about midway between Procyon and the sun in type, and the plates were measured on the Hartmann Comparator.
No. 28.-The spectrum is rather peculiar in the great intensity of the calcium K line in comparison to the hydrogen lines and the magnesium line 4481. Besides these lines, which are fairly well defined, there are traces of many faint lines in the spectrum not suitable for measurement.
No. 29. The measures of this star rest on the calcium K line alone. The two components are of about equal intensity and it is not possible to distinguish between them on the three plates. The hydrogen lines are rather wide and on none of the plates could they be measured as double.
No. 30. The hydrogen lines in this spectrum, though broad, are well measurable, 4481 and K are well defined, and numerous
faint Lut sharp metallic lines make this spectrum suited for
J. S. PLASKETT,
REYNOLD K. YOUNG.
VICTORIA, Dec. 30, 1918.
NOTE. Dr. W. S. Adams has kindly drawn my attention to a previous announcement of No. 6, Boss 4669, H.R. 6917 of the first list of binaries discovered at Victoria. (This JOURNAL 12, p. 450.) This star was contained in a list of binaries discovered at Mt. Wilson and announced in the Publications of the Astronomical Society of the Pacific, December, 1917. I also find, on comparing this list with the binaries given in the list above, that No. 21, Boss 5150, H.R. 7678, was also previously discovered at Mt. Wilson.
Hence these two binaries, although independently rediscovered here, should not be included in the list of those originally discovered at Victoria. I regret that this announcement in A.S.P. was inadvertently overlooked. This was owing to the recent organization of the observatory, to the incomplete state of the library and the press of other work, which made it impossible for the small staff to keep our card catalogue of the radial velocities and other information about stars up to date.
VICTORIA, January 12, 1919.
J. S. P.
NOTES FROM THE METEOROLOGICAL SERVICE
SUMMARY REPORT OF THE WEATHER IN CANADA
Temperature- The mean temperature was above average throughout Canada, excepting only British Columbia and the extreme eastern portion of Nova Scotia. The largest positive departures, amounting to from 4° to 8°, occurred in Saskatchewan, and from 4° to 6o in Manitoba and Northwest Ontario, whence the excess diminished gradually eastward over Quebec, to about 1° over most of New Brunswick and Western Nova Scotia. The negative departures were from 1° to 3° near the Coast in British Columbia, and about 1° in Cape Breton.
Precipitation-The precipitation did not differ greatly from average in any part of the Dominion, but such differences as ocɔurred were mostly positive. In British Columbia it was almost wholly rain at lower levels, and it was only at high levels that there was much snow. In the Western Provinces the snowfall was nearly average, and there was little, if any, rain. From Ontario eastward to the Maritime Provinces rain predominated, and such snowfalls as occurred were quite moderate. On the 31st of the month there was a light snow covering over almost the whole Dominion, including the northern part of Ontario and Quebec where there is much less than usual at this date.