CATALOGUE—GENERAL SCIENCE. 
SI 
Ritchie, William. On a new Photometer, founded on the 
Principles of Bouguer. 4°. Edinburgh, 1826. 
- On a New form of the Differential Thermometer, with 
some of its applications. 4°. London, 1827. 
- On the Permeability of transparent Screens of extreme 
tenuity by Eadiant Heat. 4°. London, 1827. 
- Examination of the Electric and Chemical Theories 
of Galvanism. 4°. London, 1829. 
- On the Elasticity of Threads of Glass, and its appli¬ 
cation to Torsion Balances. 4°. London, 1830. 
Experimental Researches in Voltaic Electricity and 
Electro-Magnetism. 4°. London, 1832. 
Robertson, David, Brady, G. S., and Crosskey, Rev. II. W. 
A Monograph of the Post-Tertiary Entomostraca of 
Scotland including species from England and Ireland. 
4°. London, 1874. 
(PaUeontographical Society.) 
Robinson, Rev T. R. On correcting Errors of the Astro- 
nomical Circle by Opposite Readings. 
4°. Dublin, 1825. 
• On correcting Observations made with Equatorial 
Instruments. 4°. Dublin, 1825. 
- Determination of the Longitude of the Armagh Obser¬ 
vatory from observed Transits of the Moon and Moon- 
Culminating Stars. 4°. Dublin, 1830. 
Robison, John. Notice regarding a Time-keeper in the 
Hall of the Royal Society of Edinburgh. 
4°. Edinburgh, 1831. 
Roche, Harriet A. On Trek in the Transvaal: or over Berg 
and Veldt in South Africa. 8°. London, 1878. 
Rodwell, G.Farrcr. Haydn’s Dictionary of Science. Edited 
by.— 8°. London, n.d. 
Rogers, Rev. Charles. Genealogical Memoirs of the Family 
of Sir Walter Scott, Bart. With a reprint of his 
Memorials of the ILaliburtons. 
(Royal IlistoHcal Society.) 
K 
8°. London, 1877. 
