GO 



The Naturalist. 



he had heard of a great many. Several geological papers, presented to 

 the library by Mr. Wm. Whittaker, F.G.S., of Ipswich, were laid upon 

 the table. The first of two lectures on " The Optical Principles of the 

 Microscope " was delivered by the secretary (Mr. George Brook), and was 

 listened to with the greatest interest. 



Meeting September 30th, the president in the chair. — The geological 

 specimens exhibited included Sphenopteris ajffinis from Barden Tower, by 

 Mr. Henry M'Kenzie ; and the following from Caithness, Nairn, and 

 Tynet, by Mr. John Conacher : — Ammonite and Gryphea incurva from 

 the liassic, Producta and Inoceramus from the carboniferous, Osteolepis, 

 Pterichthys, and Olyphos from the old red sandstone formations. In 

 botany Mr. M'Kenzie shewed Hypericum hiimifusum, Asplefwim Adian- 

 tum-nigrum, Medicago hiprdina, Potamogeton crispus, &c., from Barden 

 Towers. In entomology the president showed specimens of the very rare 

 Diasemia literali^, taken by Mr. C. G. Barrett in East Pembrokeshire 

 last June ; also Ehulea stachydalis, sent to him by Mr. Barrett, who 

 discovered the species as British, near Pembroke, last year. Mr. S. L. 

 Mosley exhibited preserved larvae of Acronycta tridens and Bombyx ruhi ; 

 Mr. J. B. Littlewood, a locust taken in a lady's dress in Spring Grove 

 Street, three days previously ; this was the second example taken in the 

 town during this summer. A larva of Acherontia Att^opos was reported 

 as having been taken in the district by Mr. Henry Stephenson. The 

 secretary (Mr. George Brook) shewed a very finely preserved arrow head 

 of the neolithic age, found a few days previously on Satron Moor, 

 Swaledale ; in connection with the find Mr. Brook gave an interesting 

 historical account of that neighbourhood. Mr. George Brook afterwards 

 delivered his second lecture on " The Optical Principles of the 

 Microscope," illustrating it with figures and specimens of the difierent 

 apparatus used, &c. It was decided that the society recommend Nostel 

 Priory, near Wakefield, as one of the excursions of the West-Riding 

 Consolidated Naturalists' Society next season. 



Meethstg October 16th, Mr. Joseph Tindall, vice-president in the chair. 

 —Mr. J. P. Dore presented to the society a photograph of the Yorkshire 

 naturalists, taken on tne occcasion of the excursion to Boroughbridge, 

 August 7th. Mr. Richard Jessop made some remarks on the specific 

 difi'erences of Gentiana A mar ella Sbud G. cam,pestris. Mr. John Conacher, 

 Jun., exhibited specimens of Unio margaritifera. The chairman said the 

 species was formerly common in this district ; this, however, was denied 

 by the conchologists present. Mr. S. L. Mosley showed a range of 

 specimens of Lyccena cego'ti, from Zermatt, Aigle, and England ; those from 

 Zermatt were very much smaller, and those from Aigle very much larger 

 than the British. The proceedings of the Hull Natural History Society 

 were laid on the table. IsIy. Lister Peace showed a very interesting slide of 

 teeth of Helix lamellata, prepared by Mr. John Turner, of Stockport. 

 Mr. William Nettleton read a paper on the " British Mammalia." — G. B. 



