GO 



observing the breaking up of the ice at the second thaw ; but, if I am 

 correctly informed, it seems that the rough spongy and discoloured 

 fragments of bottom ice did not make their appearance. The difference 

 between the minima temperatures of the two periods of frost was nearly 

 ten degrees ; for the lowest temperature of the second period, which 

 occurred on the 1 6th of January, was 1 2° • 5 ; while the lowest of the first, 

 which occurred on the third, was 2°' 8. The difference in the resulting 

 effects of the two periods with reference to the formation of ground 

 ice may, therefore, be inferred to have arisen both from the inferior 

 temperature of the first period and the suddenness of the thermal 

 changes by which it was preceded and terminated. 



XI. — Round Tower of Ardmore. By Hodder M. "Westeopp, Esq. 



[Read April 8, 1867.] 



The summit of the cone of the tower of Ardmore was formed of two 

 stones fitted together. There is scarcely any trace of carving or sculp- 

 ture on them, they are so worn by the weather and defaced by time. 

 On the side of the larger stone is a kind of groove or fluting, very per- 

 fect for about six inches ; a corresponding ornamentation was evidently 

 on the other side. On the upper part is a slight projection, which ori- 

 ginally may have been a carved ornament. The immediate top bears 

 evident traces of something having been broken off. The lower inner por- 

 tion of each stone is hollowed out into a kind of angle, evidently to meet 

 a corresponding rise in the platform stone they rested upon. No iron 

 bolt or rivet was used to firm them in their position. The two stones 

 fitted together, and formed the apex of the conical top of the tower. 

 Some of the old people of Ardmore recollect seeing a cross on the top 

 of it, which, it is said, was shot off some forty years ago by a gentleman 

 firing at a crow perched on the top : Croker makes mention of it as 

 being like a crutch. This very probably was the remaining portion of 

 an Irish wheel cross, such as is seen over the door of the tower at 

 Antrim. 



XII. — Description of Contents of a Cairn at Hyat JNttgger, in the 

 Dekhan. By Colonel Meadows Taylor. [Abstract], 

 [Read April 22, 1867.] 



The articles enumerated in the accompanying list were found by 

 Sir George Yule, K S. I., late Resident at Hyderabad, and now a 

 Member of the Council of India, in a cairn which formed one of a 

 group near the town of Hyat bugger, which is situated on the high 

 road to Masulipatam, ten miles E. S. E. of the city of Hyderabad 

 in the Dekhan. In my paper of 12th May, 1862, I brought to the 

 notice of the Academy that the environs of Hyderabad afforded some 



