22 



out fossils, much used iu repairing roofs and 

 building hedges ; the middle, hard, yellowish, 

 and porous, containing fossils, plants, and 

 shells ; the ii/jjut, of varied colors, and abound- 

 ing in fossils, this yields the many varieties 

 of Derbyshire marble, which takes a high 

 polish ; associated with these limestones were 

 barium, spars, crystals, stalactites, and the 

 numerous natural caverns and petrifying wells 

 for which Derbyshire was famous. The 

 liritstuiu's were four in number, the Anjil- 

 laceoHs grit, found in thin beds, w^hich easily 

 split, and was used for roofing. The ferrn- 

 i/inoiix, of various colours and durability, 

 some soon perishing on exposure to the 

 weather, others available only for road- 

 making, whilst some formed excellent build- 

 ing stone, stone . troughs, and mill- stones ; 

 the varicijatcd, a compact stone employed for 

 building pm'poses, and of which Chatsworth 

 House is built, and the (jri-ij Ktone, an ex- 

 cellent building stone, a famous quarry of 

 which is at Darley Dale ; ]\Ir Wonfor also 

 exhibited limestone covered with the eggs of 

 the stone mite, which were so abundant 

 that he could not pick up a piece of stone 

 without finding it covered ; the President, 

 exhibited some insects forwarded to him by 

 Mr Eobertsou, of Shoreham, and believed 

 by him to be mosquitoes. 



Your Committee have had great pleasure in 

 carrying out a resolution of the Society, recom- 

 mending the trial of Field Excursions. These were 

 commenced in April, and have been so far success- 

 ful that they recommend their continuance 



