PROCEEDINGS OF SOCIETIES. J_ 235 



were found exceedingly valuable and attractive, ranging from the 

 Laurentian Eozoou through various strata down to the fossils of 

 the Post-pliocene period, including minute structure as displayed by 

 the microscojje, as well as large forms. They are admirably adapted 

 for lectures or private exhibition. 



Amongst instrumental novelties. Dr. Pigott exhibited a refrac- 

 tometcr, briefly mentioned in the list. It is capable of working with 

 extraordinary accuracy, and will be fully described in a communica- 

 tion i^romised to the Society. 



■ - Mr. Lettsom exhibited an immersion ^^^th by Nobert, a new 

 direct-vision spectroscojDe, and some very rare objects, which will be 

 found mentioned under his name. Attention may also be called to 

 the novelties shown by Mr. Bevington, Mr. Crouch, and Mr. Swift. 



Mr. Curtics showed a new species of apterous Ichneumon. 



Mr. Ward, scales of new British Lepismas ; and the list will be 

 found to contain novelties and varieties of diatoms, fungi, &c. 



The great hall of King's College was lent, with their usual kind- 

 ness, by the authorities, and Messrs, Baker, How, and Home and 

 Thornthwaite, obligingly supplied the lamps. The number of Fellows 

 and visitors present was 120, and they highly appreciated the oppor- 

 tunity for quietly seeing and conversing upon the various objects 

 displayed. 



Messrs. Beck and Beck : Twelve microscopes and a series of 

 sections of tumours. 



Mr. Charles Baker : Microscopic marvels. 



Mr. William Bevington : New form of Stephenson's erecting 

 binocular microscope. 



Mr. Conrad Cooke: Gorethra plumicornis (living). 



Mr. Frank Crisp : Hoffman's polariscope, and a biaxial crystal ; 

 Ahren's binocular microscope, and the thecfe in receptacle of JELyme- 

 nophyllum Timbridgense, under a Stephenson's binocular microscope. 



Mr. John S. Crisp : Acari from water-rat. 



Mr. Henry Crouch : New model binocular stand, with new re- 

 movable sub-stage, leaving the whole sjjace under the stage clear when 

 taken off, and 4-inch of small aperture for the binocular microscope. 



Mr. Thomas Curties : A new species of apterous Ichneumon, from 

 Ceylon ; not yet named. 



Mr. Frederick Fitch : Serpula and Balanus balanoides (living). 



Dr. W. J. Gray : Ova of chigoe, Pulex penetrans. 



Mr. How : Section of tooth of Diplodus and Ichthyosaurus from 

 Coal-measures ; and a series of photographs of geological subjects, con- 

 sisting of groups of fossils, &c., arranged for exhibition by the magic 

 lantern. 



Mr. Thomas Howse : Section of gills of Agaricus campestris, 

 section of the tubes of Boletus, prothallus of sj^hagnum, and the very 

 curious antheridia of Azolla. 



Mr. John Ingpen : Globular silex mounted dry, in glycerine, and 

 in balsam. 



Mr. W. G. Lettsom : A ^,'4th immersion objective, by Nobert ; 

 direct-vision spectroscope, with only one prism ; and solution of sul- 

 phate of Didymium for showing the bands therewith ; small block of 



