300 THE AMERICAN MONTHLY [Nov., 



foolscap, which are or werft in the hands of Mr. John Green of 

 East Boston. It can be used only on a first class stand. This 

 the writer has practically proved. 



ITS UNIQUE POSITION. 



Paris. — No word has come from Paris that anything like 

 ths objective has been made in France. The French accord this 

 precedence to America, and pronounced the photographs from 

 this objective as not inferior to any ever taken. 



London. — In 1889, a representative of Mess, Powell & Lealand 

 looked through the l-75th, exprc ssed satisfaction in its perform- 

 ance and gave Mr. Tolles the highest compliments. He said he 

 had made a l-80th, but that it was not practically useful. In 

 1890, an Englishman in Berlin told me that photographs had 

 been taken with the l-80th but this does not annul the priority 

 of the l-75th's work in 1876. 



The following incident gives a bit of evidence. In 1889, call- 

 ing on a high London official of the largest medical society in 

 the world, I asked him if he was interested in microphotography. 

 Said he, with great dignity : " Yes, and I have taken photo- 

 graphs with the highest power ever used, to-wit,the l-15thinch 

 objective." I asked him if he would like to see some taken with 

 the l-75th? With some placid surprise he assented and they 

 were shown. All his icy demeanor melted away into the most 

 genial, warm, cordial and even effusive politeness. In the same 

 year the following saw the objective and its work, conceding its 

 position. Sir Morell Mackenzie, Surgeon General Mackinnon, 

 the highest medical official of the British Army ; his staff at the 

 war office; the Lord Mayor, 1889-1890; the medical mess at 

 Aldershot; Assistant Professor Lennox of the Royal Institution, 

 the Society of Science, Letters and Art. 



Berlin. — In 1890, said the representative of one of the larg- 

 est German microscope manufacturies, after seeing red blood 

 corpuscles demonstrated by this objective and its stand from 

 Boston: "Doctor, I thank you very much for this splendid 

 exhibition. It is the event of my life. I never saw such instru- 

 ments before. We don't make them as they will not pay for 

 them." 



Vienna. — Here is a letter from Dr. Kohler, written to me on 

 January 29th, 1891, in which he says : " The undersigned, who 



