158 Scientific Proceedings, Royal Dublin Society. 



great expense before the clay could be obtained, if we except the 

 margin or outcrop of the beds, which in places might be wrought 

 by surface openings. 



KING'S COUNTY. 



Pipe-clay, near Blackball, north of Brosna. Formerly tobacco- 

 pipes were extensively made in Brosna ; but the village was 

 destroyed over a quarter of a century ago, and the pipe-makers 

 migrated. The Blackball clay was also used by the late Lord 

 Posse for lining his furnaces. 



Yery fair Bricks are made at several places within three miles 

 of Birr, or Parsonstoivn, 15s. to 25s. per 1000, 9 x 4 x 2^, weight 

 7 lbs. Bricks of good quality were made at Eahan, Bally wil- 

 liam, &c, within two and a-half miles of Tullamore, and sent by 

 the Grand Canal to Dublin, Edenderry, and other places, 15s. to 

 20s. per 1000, 8| x 3f x 3, weight 5f lbs. The bricks now made 

 are of inferior quality, and are not in demand in Dublin. They 

 absorb damp, and can only be used in buildings that are to be 

 plastered or dashed. They have bad bearing qualities, the material 

 being poor and not well burned, 18s. per 1000. 



LEITRIM. 



At the western base of Benbo there is a bluish-white Fuller's 

 Earth. At Dromahaire there was, at one time, an extensive 

 pottery. There is Potter's Clay at the town of Leitrim, four 

 miles N. N. E. of Carrick-on-Shannon. 



At Leitrim there are red Bricks of three qualities, 15s., 20s., 

 and 25s. per 1000. A good grey brick at Killucan, one mile from 

 Carrick-on-Shannon, and at Dromahaire, nine miles from Manor- 

 hamilton, which it supplied thence, 18s. to 22s. per 1000. Mohil, 

 red, of good quality, 20s. to 25s. 



Fire-clay. — (See Co. Cavan, ante, p. 149.) 



LIMERICK. 



Inferior Pipe- clay at Rathmore, in Manasteranenagh parish. 

 In the flats of the Shannon, about three miles from Limerick, 

 Bricks and Tiles are made with clay of a bad quality, 17s. to 



