235 
7. ‘ Are there dangerous shallows off this Cape, and are 
they near the shore, or at some distance? 
8. “ The same questions are proposed in reference to the 
cape, or headland Downpatrick [county Mayo] ?” 
In addition to these queries, written originally in English, 
Mr. Downes communicated the substance of a passage in the 
Danish part of the letter, of which the following is a transla- 
tion : 
‘* Professor Magnusen, and many other distinguished Ice- 
landers, are descended from various Irish and Scotch prin- 
ces and kings, as will be fully elucidated in the British 
and Irish Antiquities ; but a detailed account of the gené- 
alogies requires much and minute preparatory research. 
We must try to excite increased interest, otherwise our 
great work will never be published: it would extend to 
four such volumes as the American Antiquities. Is there 
any prospect of an adequate subscription towards the com- 
pletion of the work, or must it be given up altogether?” 
Mr. Downes suggested to the Academy the prepriety 
of contributing liberally to the furtherance of the two above- 
mentioned works projected by the Society of Northern 
Antiquaries, as likely to be highly interesting to the Academy 
and to Ireland in general. 
Dr. Barker exhibited to the meeting the production of 
carbonic acid in the solid state, as effected by compres- 
sion and refrigeration, according to the method discovered 
by Thillorier, and with the simplified apparatus of Mr. 
Addams. 
DONATIONS. 
Comptes Rendus Hebdomadaires des Séances de lV Aca- 
demie des Sciences. Par MM. les Secretaires Perpetuels. 
Second Semestre. Nos. 17, 18. Presented by the Academy. 
