Royal Dtihlin Society from 1877 to 1898 inclusive. 
37 
S 2 :)ecific Gravity ; Method of Determi¬ 
ning, of small Quantities of dense 
or porous Bodies.—Joly, J. Proc. 
V., 1886-87, pp. 41-47. 
•Specific Gravity of Solids; Modijfication 
of Sprengel’s Apparatus for Determi¬ 
ning the.—Sollas, W. J. Proc. v., 
1886-87, pp. 623-625. 
Specific Gravity of Substances in the 
Form of Powder ; Method of Determi¬ 
ning.—Smeeth, W. F. Proc. vi., 
1888-90, pp. 61-62. 
Spectra of Gases; Cause of Double 
Lines and of equidistant Satellites in 
the.—Stoney, G. Johnstone. Trans. 
IV., 1888-92, pp. 563-608. 
Spectra, Photographs of the Spoark, of 
twenty-one Elementary Substances. 
—Hartley, W. N. Trans, i., 1877- 
83, pp. 231-238. 
Spectra ; Ultra-Violet, Instruments and 
Processes employed in Photographing. 
—Hartley, W. N. Proc. iii., 1881- 
83, pp. 93-107. 
Spectrographic Analysis of Iron Meteo¬ 
rites, Siderolites, and Meteoric Stones. 
— Hartle}^, W. N., and Damage, 
Hugh. Proc. VIII., 1893-98, pp. 703- 
710. 
S})ectrometer, Mounting of the large 
Howland, in the Boyal University of 
Ireland.—Adeney, W. E., and Carson, 
James. Proc. viii., 1893-98, pp. 
711-716. 
Spectroscope ; Hew Form of Measuring 
Apparatus for a Laboratory.—Pey- 
nolds, J. Emerson. Proc. i., 1877- 
78, pp. 5-9. 
Spectroscopes; Method of Observing 
Faint Lines with Diffraction.—Hart¬ 
ley, W. H. Proc. IV., 1883-85, p. 206. 
'Spectrum, photographic, of Comet.— 
Huggins, William. Proc. iii., 1881- 
83, p. 150. 
Spectrum of Sodium; Analysis of the. 
—Stoney, G. Johnstone. Proc. vii., 
1891-92, pp. 204-217. 
■Specula of Deflecting Telescopes, Mount¬ 
ing for the.—Stoney, G. Johnstone. 
Proc. VIII., 1893-98, pp. 266-271. 
Spheroidal State.—Barrett, W. F. Proc. 
I., 1877-78, pp. 83-85. 
Spheroidal State.—Moss, Diehard J. 
Proc. I., 1877-78, pp. 87-91. 
Spherulitic Docks from Co. Down.— 
Hyland, J. S. Proc. vi., 1888-90, 
pp. 420-437. 
Sponge-Spicules; Physical Characters 
of Calcareous and Siliceous.—Sollas, 
W. J. Proc. IV., 1883-85, pp. 374- 
392. 
Sponges ; Classifleation of.—Sollas, W. 
J. Proc. V., 1886-87, p. 112. 
Sponge; an Hexactinellid from the 
Gault, and a Lithistid from the Lias 
of England.—Sollas, W. J. Proc. 
IV., 1883-85, pp. 443-446. 
Springs, Hot, of Tarawara, New Zea¬ 
land ; Ejecta of the.—O’Deilly, J. P. 
Proc. VI., 1888-90, pp. 67-68. 
Squirrel; Introduction into Ireland of 
the.—Barrington, Diehard M. Proc. 
II., 1878-80, qjj). 615-631. 
Star; Geometrical Method of finding 
the most apparent Orbit 
of a Double.—Dambaut, A. A. Proc. 
VII., 1891-92, pp. 95-98. 
Star-Distribution.—Monck, W. H. S. 
Proc. IV., 1883-85, pp. 470-476. 
Star-Distribution ; further Demarks on. 
— Monck, W. H. S. Proc. iv., 
1883-85, pp. 493-504. 
Star Images, Distortion of Photograjjhic, 
due to Defraction.—Dambaut, Arthur 
A. Proc. VIII., 1893-98, pp. 186- 
194. 
Stars, Photographic Method of detecting 
the Existence of Variable.—Joly, J. 
Proc. VIII., 1893-98, pp. 184-185. 
Stars ; Places of 1000, observed at the 
Armagh Observatory. — Dohinson, 
Dev.T. Domney. Trans, i., 1877-83, 
pp. 101-132. 
Steel; Magnetic Moment and other 
physical Constants of Steel containiug 
from one to twenty per cent, of 
Manganese.—Barrett, W. F. Proc. 
VI., 1888-90, pp. 460-474. 
Steel; Physical Properties of Manganese 
[Steel].—Barrett, W. F. Proc. v., 
1886-87, pp. 360-371. 
Stellar Photography ; Shutters for Use 
in.—Joly, J. Proc. vii., 1891-92, 
pp. 196-200. 
