THE 
SCIENTIFIC PROCEEDINGS 
OF THE 
ROYAL DUBLIN SOCIETY. 
Vol. XI. (N.8.), No. 5. SEPTEMBER, 1909. 
A NEW FORM OF RIGHT-ASCENSION 
SLOW MOTION FOR EQUATORIAL TELESCOPES, 
ILLUSTRATED BY THE DRIVING-GEAR OF THE 
CAPE TOWN EQUATORIAL. 
bY 
SIR HOWARD GRUBB, E.RS, 
VICE-PRESIDENT, ROYAL DUBLIN SOCIETY, 
[PLATE 1.] 
[Authors alone are responsible for all opinions expressed in their Communications. | 
DOE ET N-: 
PUBLISHED BY THE ROYAL DUBLIN SOCLETY. 
WILLIAMS AND NORGATE, 
14, HENRIETTA-STREET, COVENT GARDEN, LONDON ; 
20, SOUTH FREDERICK-STREET, EDINBURGH; 
ann 7, BROAD-STREET, OXFORD. 
1905. 
Price Sixpence. 
