VOL. LXXI.] PHILOSOPHICAL TRANSACTIONS. 85 



The rest are represented as they appear since the mortar, with which they were stopped up, has been 

 in part, or wholly picked out with a small instrument. 



Fig. 19, a nursery. Fig. 20, a little nursery, with the eggs, the young ones, the mushrooms, 

 mouldiness, &c. as just taken from the hill. 



Fig. 21, the mushrooms magnified by a lens. 



PI. 2, fig. 1 and 2, the turret nests, with roofs of the termes mordax and a termes atrox as finished. 



Fig. 3, a turret, with the roof begun. Fig. 4, a turret, raised only about half its height. Fig. 5, 

 a turret, building on one which had been thrown down. Fig. 6, 6, a turret broken in two. 



Fig. 7, a termes bellicosus. Fig. 8, a king. Fig. 9, a queen. Fig. 10, the head of a perfect in- 

 sect magnified. Fig. 11, a face, with stemmata magnified. Fig. 12, a labourer. Fig. 13, a la- 

 bourer magnified. Fig. 14, a soldier. Fig 15, a soldier's forceps and part of his head magnified. 

 Fig. 16, the termes mordax. Fig. 17, the face with the stemmata magnified. Fig. IS, a labourer. 

 Fig- 1 9, a soldier. Fig. 20, the termes atrox. Fig. 21, the face and stemmata magnified. Fig. 22, 

 a labourer. Fig. 23, a soldier. Fig. 24, idem. Fig. 25, the termes destructor. Fig. 26", the facff 

 and stemmata magnified. Fig. 27, the termes arborum. Fig. 28, the face and stemmata magnified. 

 Fig. 29, a labourer. Fig. 30, a soldier. Fig. 31, a queen. 



n. b. In the figures II, 17, 21, 26", and 28, the two white spots between the edges are the 

 stemmata. 



XII. An Account of several Earthquakes felt in JVales. By T. Pennant, Esq., 



F.R.S. p. 193. 



On Dec. 8, between 4 and 5 in the evening, we were alarmed with 1 

 shocks of an earthquake; a slight one, immediately followed by another very 

 violent. It seemed to come from the north-east, and was preceded by the usual 

 noise. Mr. P. could not trace it farther than Holywell. The earthquake pre- 

 ceding this was on the 29th of August last, about a quarter before 9 in the 

 morning. Mr. P. was aware of it by a rumbling noise, not unlike the coming 

 of a great waggon into the court-yard. Two shocks immediately followed, which 

 were strong enough to terrify the people. They came from the north-east; were 

 felt in Anglesea, at Caernarvon, Llanrwst, in the isle of Clwyd south of Den- 

 bigh, at his house, and in Holywell. 



The next, in this retrograde way of enumerating these phenomena, was on 

 Sept. 8, 1775, about a quarter before 10 at night: the noise was such as pre- 

 ceded the former, and the shock so violent as to shake the bottles and glasses on 

 the table round which Mr. P. and some company were sitting. This seemed to 

 come from the east. In the Gentleman's Magazine of that year, this shock, it 

 was said, extended to Shropshire, and quite to Bath, and to Swansea in South 

 Wales. The earliest earthquake Mr. P. remembered here was on the 10th of 

 April 1750. It is recorded in the Philos. Trans. 



Mr. P. resided near a mineral country, in a situation between lead mines and 

 coal mines; in a sort of neutral tract, about a mile distant from the first, and 

 half a mile from the last. On the strictest inquiry he could not discover that 

 the miners or colliers were ever sensible of the shocks under ground; nor have 



