296 
CORRESPONDENCE, 
this is used with water between the front lens or not." Mr. Wenham 
is here referring to the effect produced when the object is mounted 
dry. Will he explain what will be the result if the object is mounted 
in balsam, or other fluid ? Also, what is meant by " water between 
the front lens " ? 
Respectfully, 
Charles Stodder. 
Benech^'s No, 7 Objective,* 
To the Edittr of the ' Monthly Micvtszopicul Journal.'' 
Baltimore, September 27, 1875. 
Sir, — The flattering notices of Beneche's No. 7 objective which 
appeared in the ' M. M. J.' induced me to order that objective from 
its maker, and also, about the same time, to determine the purchase 
of another by the Section of Microscopy and Biology of the Maryland 
Academy of Sciences. The following letter was read and delivered 
to Mr. L. Beneche by an agent of the Berlin bankers on the 16th 
August last, but Mr. B. refused to make any reply. The Academy 
of Sciences also has had no advices from the German optician, 
although, as in my case, a sight draft for the money accompanied the 
order. 
"Baltimore, U.S.A., July 2G, 1875, 
"No. 82, Franklin Street. 
" Sir, — On the 18th February, 1875, I sent you by mail niy first 
of exchange. No. 6621, drawn by Messrs. Kiimmer and Becker, of 
Baltimore, in my favour, on Messrs. Anhalt and Wagoner, of Berlin, 
for the amount of forty-five rix marcs (45 E. mx.). 
" The money was in prepayment of a first-rate Beneche No. 7 
objective and an adapter to the Society screw, leaving a possible 
balance, which was to be returned to me. 
" On the 6th March, current, you drew the money, as your receipt 
for it shows. 
" Not hearing from you, I wrote you on the 26th May, and again 
on the 25th June ; but up to present date I have had no advices from 
you, either about the money or the goods. 
" I now write to ask an explanation of conduct apparently so dis- 
honourable, and to say that if you thus deal with your would-be 
customers I will not fail to make the fact known. I wrote for the 
objective on account of recommendations I saw in the London 
' Monthly Microscopical Journal,' and, trusting you, as I do all English 
[* Mr. Johnston's note ariaved in time for insertion in the November number. 
Wo, liowever, withheld it for a wliile, and in the meantime we wrote to Herr 
Beneche', thinking it right to give him an opportunity of replying to certain 
inquiries we made of him. Herr Beneche has not had the common politeness to 
acknowledge the receipt of our communication ; in fact, he has treated us as 
lie lias dealt with Dr. Johnston, and therefore we consider the publication of 
Dr. Johnston's letter perfectly justifiable. — Ed. ' M. M. J.'] 
