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Survey office in the Phoenix Park, planned and directed by Captain 
Larcom, has now been upwards of ten years in active operation, 
and may be taken as a model for similar establishments. Of the Mag- 
netical and Meteorological Observatory of Dublin, founded in the year 
1838 by the University, I have already had frequent occasion to speak 
at these meetings, and I hope before long to communicate some of the 
ultimate results. ;, 
“ Of the Geology of Ireland I have, perhaps, less right to speak, as 
the subject -has been appropriated by another and a younger Society, 
Yet there are two facts in its recent history of such importance, that it is 
impossible not to refer to them in noticing the labours of the members of 
this Academy. Imean the completion of the Geological Map of Ireland 
by Mr. Griffith, which, as the work of one man, is certainly one of ex- 
traordinary merit ; and the recent arrangements for the continuation of 
the Geological Survey of this country, the first fruits of which are before 
the world in Captain Portlock’s able and elaborate Report on the 
Geology of Londonderry. 
« Passing now from the sciences of Observation to those of Experi- 
ment, we here also meet with labourers of our own Body, and our 
Transactions are enriched with the results of their successful toil. Here 
are to be found the hygrometric researches of Dr. Apjohn, which have 
solved one of the most intricate problems in Meteorology ; and the still 
more refined researches of the same author upon the Specific Heats of 
the Gases, to which you have awarded your medal. Here too are to be 
found most of the Chemical researches of Sir Robert Kane, upon the 
chief of which you have conferred a similar reward ; and to this body 
were communicated the first investigations of Dr. Andrews, upon the 
Heat developed in Chemical Combination, which have recently been 
honoured with the Royal Medal. 
“To remind you of the progress which Natural History has made, 
and is yet likely to make in this country, T have only to mention the names 
of Ball, of Thompson, of Mackay, and Harvey, and Allman, whose con- 
tributions to the history of the Fauna and the Flora of Ireland are too 
well known to need any comment here. The researches of Dr. Har- 
vey, indeed, have embraced a wider range ; and his latest work, the 
Phycologia Brittanica, now in course of publication, cannot fail to 
