147 
Pardon was, on the 22nd of January, 1506, granted to the said John Yong, 
and his possession of said lands confirmed.* 
Under this new appropriation of the building its final change was no 
doubt made, and its most modern features attached to it. 
The Rey. Dr. Lloyd read a paper on ‘‘ Light reflected and transmitted 
by thin Plates,’’ which was referred to the Council for publication in 
the Transactions. 
Mr. WitpE communicated the following account of three crannoges, 
or stockaded islands, discovered in the counties of Leitrim, Longford, and 
Antrim. Healso presented and described a number of donations, some 
of which were found in connexion with these crannoges. He said :— 
‘‘On the part of the Earl of Leitrim, who presented the remains of a 
single-piece, flat-bottomed canoe, on the 80th November, 1858, I beg to 
remark that it was discovered at Lough Rinn, barony of Mohill, and county 
of Leitrim, in the year 1847. It is of oak, but not black, like that obtained 
from bogs; is 13 feet long, and 2 broad, with nearly parallel sides, now 
about 4 inches deep, and square ends, somewhat similar to that figured 
in Shirley’s ‘ History of the Territory of Farney,’ page 210. The sides 
are now nearly imperfect, and, like other articles of wood presented to 
the Museum, it would have split, but that it has been recently hooped 
with iron. In continuation of similar articles belonging to the Academy; 
it will be marked No. 6 in the registration, to follow that given at page 
205 of the printed Catalogue. His Lordship has kindly accompanied his 
gift with the following notice, which [have recently received from him:— 
‘c<The boat was found in the mud when the lake was lowered, near 
an old castle at the point of the peninsula from whence this place and 
district takes its name. The district was formerly called Conmaicne- 
Moyrein. In front of the old castle there is an island, now covered with 
natural wood of ash and thorn, and at the time the lake was lowered 
I found that this island was formed of wooden piles of very slight scant- 
ling, but perfectly sound. The paling was interlaced and pegged down 
in a very rude manner, and the island appeared to have been formed 
inside of it, and raised upon a similar description of work. Two other 
ancient boats, but of a different form, were found in the same locality, 
upon the lowering of the waters, and also a boat-chain composed of iron 
rods looped at their ends.’ A similar form of boat-chain was found in 
one of the Strokestown crannoges. 
‘‘ From this description it is manifest that we have here another cran- 
noge, or stockaded island, in Ireland, in addition to those I have already 
described in the first part of the Catalogue,—this being the twenty-first 
discovered in the county of Leitrim. It is the only wooded crannoge of 
which we have had any notice. Lough Rinn is mentioned in the Annals 
of Clonmacnoise, and of the Four Masters, at the year 1345. inn gene- 
* Calendar. Cancellariz Hib., 21 Hen. VII., p. 2720, n. 8. 
