Experiments on Drummond’s Light made in Turkey. 239 
‘Turks when it first shone forth in all its brilliancy. ‘ Mash- 
‘allah allah gunez boo!’ was heard on all sides, and I must 
‘acknowledge that my astonishment and delight were no less 
when I first found my attempts successful, in which Dr. Zohrab 
‘equally participated, neither of us having ever seen it in En- 
‘gland. I promised you that on my return from examining and 
‘reporting on the state of the lighthouses in the Black Sea, 
I would give you a detailed account of my proceedings, a 
promise which I now propose to redeem as far as the extent 
of a letter will permit. 
** When Halil Pasha first mentioned the Drummond’s light, 
‘having searched my own library in vain for any description, 
I applied to Dr. Zohrab, who, having studied in Edinburgh, 
and being in the habit of reading English works, I thought 
might possess the desired information ; and fortunately he had 
a number of the Nautical Gazette in which was given several 
particulars of the light, with drawings, and as we were reading 
of its beauties, a sudden thought struck us of trying to make 
it. I set to work that night, and made a drawing of the sim- 
plest apparatus I could conceive capable of producing the de- 
‘sired effect, which was as follows. In fig. 1, A and B are two 
bladders, one containing 
‘oxygen, the other hydro- 
gen. C is the mixing- 
box, to which they are 
attached by being firmly 
tied upon the two project- 
ing pipes. In this box were placed about thirty pieces of 
‘wire gauze, which, by the by, we were sadly at a loss to ob- 
tain'till we accidentally fell upon two wire-gauze masks which 
had been used at the last carnival; these were instantly cut 
up and arranged in the mixing-box, at the upper end of which 
we attached the small pipe and stopcock as in the figure. 
The stopcock belonged to an apparatus of Dr. Zohrab’s, and 
the small pipe wis made by an ingenious Armenian at Ga- 
leta. Thus prepared, we filled the bladders with the proper 
gases (after only one unsuccessful attempt), and a piece of lime 
placed on a lump of clay was put before the jet: a board was 
then placed on the bladders with a weight on it. We then 
lighted the jet, and to our inexpressible joy a light instantly 
burst forth so intense that it was impossible to look directly 
at it. ‘This being accomplished, and our apparatus appearing 
safe, I determined to exhibit the light itself to the Pasha, in- 
stead of the drawing of it which I had promised him. The 
astonishment and approbation were, as I have stated, very 
great, and I was immediately dispatched to the Black Sea, to 
