98 
no claim to the advantages mine possesses, either in facility of exe- 
cution or rapidity of result. I think ‘he says it requires six or eight 
minutes to accomplish what mine does in two or three seconds. 
After my process was published by being read at the meeting of the 
Association at York, the sulphate of iron was applied to iodised 
paper, but not before. That proceeding has increased its sensibility, 
and made it approach in sensibility to mine; but it obviously does 
not interfere with my right to consider the Catalysotype my own 
child, and to call it what I please. However, I think all experi- 
mentors with light owe you a great debt, and should pay particular 
attention and respect to your opinion ona subject for which you 
have done so much ; I will, therefore, not insist on adhering to the 
word Catalysotype, but leave the process to be dealt with as a fact 
in the general history of active chemistry. For the present the 
name must be borne with, as my Paper is written and given to Dr. 
Robinson; but if it ever should be again spoken of, which is per- 
haps not probable, we will not elevate it to the honour of a distinct 
prefix. 
** T am, &e. 
“'Tromas Woops.” 
May 26, 1845. 
SIR Wu. R. HAMILTON, LL.D., President, in the 
Chair. 
A sealed packet was opened, with the consent of Mr. R. 
Mallet, by order of the Academy, which he had deposited 
with the Academy at the meeting of the 13th of November, 
1843. Mr. Mallet then stated the subject matter of the en- 
closed document to be certain propositions regarding improved 
methods of working atmospheric railways, and that his object 
in calling for the production of the packet upon this evening 
was to claim his priority of invention, as similar plans have 
been since proposed by French and English engineers. 
A letter from Mr. Clibborn was read by the Secretary, 
relating to the discovery of certain gold antiquities near Naas. 
