84 Exhibits in Natural History. [Sess. 



of June 1892. The double-handled Amphora is in perfect condition, and 

 was dug up while some workmen were excavating a cellar. When dis- 

 covered, it was resting in a deposit of what appeared to be small limpet 

 shells, and great numbers of these shells were adhering to the outside of 

 it. A gentleman who was passing at the time acquired the jar, and after- 

 wards gave it to Mr Grieve. By request he made some further inquiries 

 regarding the excavations, and informed Mr Grieve that a few feet below 

 where the Amphora was found the workmen came upon a huge flat stone 

 lying in a slanting position, and weighing many tons. This was examined 

 by several scientists, and pronounced to be an old Druid stone, but the 

 informant did not state any reasons for their arriving at such a con- 

 clusion. This stone the workmen cut in half, so as to level it, and it now 

 forms part of the cellar floor. 



Shin of " Timber " Wolf (Canis lupus, var. griseus of Eichardson). — 

 This is the common Grey Wolf, called in British Columbia the Great 

 Timber Wolf. Mr Grieve purchased two very fine skins of it from a 

 trapper at Glacier, Selkirk Mountains, British Columbia, one of which 

 was exhibited. These animals vary considerably in size in different 

 localities, but those met with at Glacier are large. They are very fierce 

 and dangerous when pressed by hunger in winter, and every means is used 

 to try and destroy them, but poison appears to be the most successful 

 method. 



By Mr Wm. Forgan, F.E.M.S. 



New Photo-Microscopic Camera and Microscope for •photographing Micro- 

 scopic Objects. — This apparatus was shown, and the method of using it 

 fully described. The chief peculiarity was the use of magnesium ribbon 

 as the illuminant — a method of lighting the objects to be photographed 

 devised by Mr Forgan. This was done by burning the ribbon, pushing it 

 as required through a small piece of brass tube previously fixed in a shutter 

 so as to be always in the centre of the optical axis of the instrument. Sir 

 Henry Boscoe states, in his book on Spectrum Analysis, that magnesium 

 is peculiarly rich in purple and violet rays. It is therefore the very best 

 illuminant for affecting the photographic plate. Exposures, therefore, 

 which would require with a good lamp from five to ten minutes, may be 

 made with magnesium in as many seconds. 



By Mr William Coats. 



Slide showing Contents of Alimentary Canal of Dragon-fly. — Here there were 

 seen portions of heads, eyes, antenna?, legs, wings, &c, of insects captured 

 by the dragon-fly while on the wing, — clearly demonstrating the rapacious 

 nature of the animal in its perfect condition. 



