June 29, 1899] 
will be added to the museum of oceanography recently founded 
by the Prince at Monaco. 
WE have received the first number of /zz/and, an ‘‘ English 
journal devoted to the cause of the Finnish people.” 
Scéence of June 16 publishes a translation of a criticism of the 
plans for an International Catalogue of Scientific Literature, 
contributed to the Zoologésche Anzeiger by Prof. J. Victor Carus. 
A MEETING of the Anatomical Society of Great Britain and 
Treland will be held in the Anatomical Schools, New Museums, 
Cambridge, on Saturday, July 8, commencing at 2 p.m. 
Messrs, J. AND A. CHURCHILL announce that they will 
shortly publish the following scientific works : A text-book of 
physics by Prof. Andrew Gray, F.R.S.; the book will be 
issued in three parts, the first to appear being that on dynamics 
and properties of matter. A work on medical electricity 
for the use of students and practitioners, by Dr. W. S. Hedley. 
A handbook on chemistry and physics, for students preparing 
for the first examination of the Conjoint Board, by Messrs. 
Corbin and Stewart. 
THE additions to the Zoological Society’s Gardens during the 
past week include a Rhesus Monkey (AZacacus rhesus, 2 ) from 
India, presented by Mrs. L. Smallcombe ; a Macaque Monkey 
(Macacus cynomolgus) from India, presented by Mr. J. H. 
Johnston ; a Diana Monkey (Cercopzthecus diana, 2? ) from West 
Africa, presented by Mr. T. N. Loy; a Deer (Cartacus, 
sp. inc. 6) from Tobago, presented by Captain J. Leslie Burr, 
R.N. ; a Stone Curlew (dedicnemus scolopax), European, pre- 
sented by Mr. D, T. Campbell ; six Cormorants (Phalacrocorax 
¢arbo, juv.) from Scotland, presented by Mr. Percy Leigh 
Pemberton ; a Yellow-crowned Penguin (Zudyptes antipodum), 
a Thick-billed Penguin (Zudyptes pachyrhynchus) from New 
Zealand, a Rock-hopper Penguin (Zudyptes chrysocome) from 
the Falkland Islands; two Elephantine Tortoises (Zestudo 
elephantina) from the Aldabra Islands, a Reticulated Python 
(Python reticulatus) from the East Indies, deposited; a Red 
Deer (Cervus elaphus, 8), born in the Gardens ; two Coscoroba 
Swans (Coscoroba candida) from Antarctic America, purchased. 
OUR ASTRONOMICAL COLUMN. 
ASTRONOMICAL OCCURRENCES IN JULY :— 
July 2. gh. 16m. torrh. 14m. Transit of Jupiter’s Sat. III. 
3- 2h. 4om. to 13h. 30m. Occultation of the star 
D.M. + 21°, 539 (mag. 5°7) by the moon. 
3. I4h. 57m. to 15h. 43m. Occultation of the star 32 
Tauri (mag. 5°7) by the moon. 
5. 15h. Conjunction of Venus and the moon (9 1°0 
, 
south). 
6. toh. Conjunction of Venus and Neptune (9 0° 46’ 
north). 
13. 9h. 51m. Minimum of Algol (8 Persei). 
15. Venus. Illuminated portion of disc 0°955, Mars 
0°931. 
19. Sh. 6m. to gh. 17m. Occultation of B.A.C. 5709 
(mag. 6°3) by the moon. 
19. 8h. gm. to 9h. 24m. Occultation of 26 Ophiuchi 
(mag. 6°1) by the moon. 
19. 14h. Conjunction of Saturn and the moon (hk 2° 26’ 
north), 
20. 7h. 39m. to Sh. 41m. Occultation of 7 Sagittarii 
(mag. 5°4) by the moon. 
20. Sh. 4m. to gh. 15m. Occultation of 9 Sagittarii 
(mag. 5°7) by the moon. 
21. 23h. Mercury at greatest elongation (26° 50’ east). 
24. - oh 26m. Jupiter’s Sat. IV. in conjunction with north 
pole of planet. 
28. Tempel’s comet (1873 II.) in perihelion. 
NO. 1548, VOL. 60] 
NATURE 
207 
TEMPEL’S COMET 1899 ¢ (1873 II.)—The following ephemeris 
is contributed to the Astv. Nach. (Bd. 149, No. 3574), by M. L. 
Schulhof. 
Ephemerts for 12h. Paris Mean Time. 
1899. R.A. Decl. Br. 
eyes Se EAS o£) 
June 2 20 13 3374 — 8 35 52 2°525 
30 14 51°3 8 56 1 
Julyr . 16 88 9 16 56 
2 17 25°9 9 38 37 
3 18 42°5 TO} STi 5) 2°770 
4 19 58°6 10 24 18 
5 21 14°4 10 48 17 
6 2ON22020570 c.<, (— Ll 13 3 (0 
FIFTH SATELLITE OF JUPITER.—In Sudletix No. 10 of the 
Yerkes Observatory (Astrophysical Fournal, vol. ix., p. 358), 
Prof. G. E. Hale gives the measures of Jupiter’s fifth satellite 
which have recently been made by Prof. E. E. Barnard with 
the 4o-inch refractor. The observations were made on five 
nights during March and April 1898, and on four nights during 
Apriland May 1899. The constants determined are as follows :— 
Times of east elongation, ea M.T. East elongation distance. 
‘dsahe 
1898 March 2 18 57° 780 Re 
1898 March 6 18 36°11 ... 48°14 
1898 April 5 es 360 48°12 
1899 April 25 19 5°26 ... 48°34 
1899 May 1 I8 32°72 ... 48°29 
The different values of the elongation distance are due to the 
revolution of the line of apsides, which, as Tisserand showed, 
takes place in a period of five months. The consistency of 
the measures with the instrument are shown by the plotted 
curve of the 131 observations of May 1, none of which depart 
more than 04 of arc from the mean. 
The great number of revolutions made by the satellite since 
its discovery in 1892 render possible an accurate calculation of 
its period. Using the elongations of September 10, 1892, 
March 6, 1898, April 25, 1899, and May 1, 1899, the resulting 
periodic time is found to be 
1th. 57m. 22°647s. 
OxFoRD UNIVERSITY OBSERVATORY.—The twenty-fourth 
annual report of the Savilian Professor contains an account of 
the work accomplished from June 1, 1898, to May 31, 1899, and 
a survey of the condition of the instrumental equipment. The 
large dome, erected in 1875, has become so defective that plans 
for a new one have been prepared, the estimated cost being 
440/. In consequence of disadvantages resulting from the un- 
protected state of the observatory, the need of a residence is 
strongly urged. During the year the observatory has been 
greatly enriched by the acquisition of the library of the late 
Mr. George Knott. Among the numerous presents re- 
ceived, special mention is made of a long series of early 
nautical almanacs, extending from 1767 to 1843, kindly given 
by Mr. Robert Gordon. 
The De la Rue astrographic telescope is in good order, 258 
plates for the catalogue having been taken during the year. The 
De la Rue reflector and the Barclay transit circle are both in 
good order. With the latter an unknown, variable change of 
collimation error has been traced to the looseness of the object- 
glass in its cell, this being finally eliminated by cotton wool 
packing. 
No time has been found to proceed further with the photo- 
graphic transit circle. The four micrometers for measuring the 
catalogs plates are in general use, one being in charge of Mr. 
Ife “Moore, of Doncaster, who has measured 61, 186 stars 
a it. 
The staple work of the observatory staff has been the measure- 
ment and reduction of the plates for the astrographic catalogue, 
and about half of this is now done, 586 plates out of the 1180 
allotted to the observatory having been measured, and 525 com- 
pletely reduced. In the region of the Milky Way the times ox 
exposure for the plates have been reduced to 3 min., I min. and 
20 secs., the number of stars even with the smaller exposure 
being still over 300. 
Considerable interest attaches to the investigation undertaken 
to determine the possible distortion present in a large photo- 
graphic doublet. Positives from plates taken with the 24-inch 
Bruce doublet at Arequipa have been lent by Prof, Pickering, 
