18 



so in this, hand drawing is yet without its equal. Still, as was 

 subsequently pointed out, all niicroscopists are not good draughtsmen ; 

 and to such photography, is of valuable assistance. A number of processes 

 were explained, and Mr. Pocklington gave many hints and devices by 

 which better results were to be obtained. By means of the lantern a large 

 and varied number of slides, including several of special difficulty, were 

 thrown on the screen. 



ANNUAL CONVERSAZIONE. 



The conversazione held on May 1st, 1889, at the Philosophical Hall 

 was a great success. Between three and four hundred persons Avere 

 present, comju-ising members of the Club and their friends, and every 

 part of the programme arranged for their delectation appeared to 

 meet with hearty ajjpreciatiou. The guests began to arrive at half-past 

 seven o'clock. About half an hour later, the company having partaken of 

 coffee, and having also had the opportunity of preliminarily, though 

 cursorily, inspecting the numerous exhibits, a general move was made to 

 the Lecture Theatre, where Professor De Burgh Birch, the President, 

 welcomed those present on behalf of the Club, and mentioned the 

 principal objects of interest which had been got together. To enumerate 

 every item in the attractive collection of scientific and artistic matters 

 which were brought together would occui)y much more space than is at our 

 disposal. The microscopical section was fraught with unusual interest on 

 account of the serial slides illustrating tlie life-history of the parasite of 

 the wild bee {St>/lops Spencii) in its development from the jmniitive larva 

 to the male stylops emerging from the bee ; and the Hessian Fly, whose 

 ravages upon the stems of barley are well known. Mr. C. P. Hobkirk 

 showed some semi-fossil moss from the caulking of an ancient boat found 

 at Brigg, Lincolnshire. Several of the exhibits were made by members 

 of the Skipton Naturalists' Society. Another portion of this .section was 

 set apart for studies in pond-life by Mr. W. T. Grimshaw ; among the 

 miscellaneous items under the microscope were three which Dr. E. H. 

 Jacob exhibited as the causes respectively of "Favus" (a kind of skin 

 disease which occurs on the liumau head, and of which the exhibitor has 

 only known tlu'ee cases during the last twelve years;, " Eingworni,' and 

 "Thrush." Altogether about 60 microscopes were employed. In t)ie 

 same room were shown about 50 water-colour drawings of the ducks of 

 Europe, the work of Mv. Edgar E. Waite, who also exhibited his working 

 collection of British Birds' skin.s. A collection of eggs of British and 

 foreign birds, by Mr. E. Middleton ; examples of ortho-chromatic photo- 

 graphy, by Mr. C. H. Bothamley ; North African and Continental 

 photographs, lent by Councillor Ambler; and a collection of Norwegian 

 jewellery and curiosities, exhibited by Messrs. Tom Atkinson, J. Buckley, 

 E. C. Midgley, and Mi\s. Addymau— some of the last-named articles 



