398 LIEUT. DRUMMOND ON THE ILLUMINATION OF LIGHT-HOUSES. 
from some insurmountable difficulties in the way of its practical application, 
and not from the want of a full and impartial trial on the part of that body, 
to whom these establishments are entrusted. 
1 owe this acknowledgement in an especial manner to John Woolmore, Esq. 
the Deputy Master of the Corporation, to Captains Clarke, Pelly and Browne, 
the gentlemen constituting the Light Committee, for the fairness and impartia- 
lity of their decisions, as well as the indulgence which they extended to those 
defects inseparable from anew apparatus; and to Mr. Herbert the Secretary, 
for his uniform desire to promote every arrangement that appeared likely to 
bring this inquiry to a satisfactory termination. 
To these acknowledgements I may be permitted to add my obligations to my 
commanding officer and friend Colonel Colby, for the facilities he has afforded 
me in carrying on these experiments, and for the advice and assistance which 
he has on this and many other occasions so kindly rendered me. 
London, June 1 "Jth, 1830 
