[August, 1901.] 



THE 



SCIENTIFIC TEANSACTIONS 



ROYAL DUBLIN SOCIETY, 



VOLUME VII.— (SERIES II.) 



A NEW COLLIMATING-TELESCOPE GUN-SIGHT FOR LARGE AND SMALL 



ORDNANCE. 



By sir HOWARD GRUBB, F.R.S., Vice-President, Eoyal Dublin Society. 

 (Plate XXVI.) 



DUBLIN: 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 



WILLIAMS AND NORGATE, 



14, HENRIETTA STEEET, COVENT GARDEN, LONDON ; 



20, SOUTH FREDERICK STREET, EDINBURGH: and 7, BROAD STREET, OXFORD. 



PEINTED AT THE TJNIVEESITY PEESS, BY PONSONBT AND WELDEICK. 



1901. 



Price One Shilling. 



