58 Limelight Lantern Exhibition. [Sess. 



would thus grow by gradual accretions. The structure of 

 this ball is therefore analogous to that of the Uist balls, but 

 quite different from that of the pine-needle and Posidonia 

 balls. 



IV.— LIMELIGHT LANTERN EXHIBITION. 



By Mr WM. FORGAN, F.RM.S. 



(Dec. 23, 1892.) 



This exhibition comprised a series of slides of decoys and 

 decoy-ducks, lent by Mr W. Eagle Clarke ; a series of slides 

 of birds' nests photographed in situ from negatives by Dr 

 George Burn Murdoch; and a number of photo-micrographs 

 of microscopic objects, — the whole being exhibited and ex- 

 plained by Mr Wm. Forgan, F.RM.S. Mr Eagle Clarke's 

 slides were described by means of a very excellent description 

 of these decoys, which was much appreciated by the members. 

 The transparencies from Dr Burn Murdoch's negatives were 

 made for the occasion by Mr Forgan. The negatives were 

 very fine ; and when it is considered that there is enormous 

 difficulty in photographing wild birds when sitting on their 

 nests, the patience and skill displayed by Dr Burn Murdoch 

 were all the more wonderful. 



V.— NATURAL HISTORY NOTES. 



AN OTTER STORY. 



By Mr TOM SPEEDY. 



(Read Jan. 27, 1893.) 



Having accepted an invitation from my old friend Macdonald 

 to spend a few days with him last November, in order that I 

 might procure some snow-buntings and other birds which visit 

 the mountains in the winter months, I wended my way amid 

 considerable difficulty to his house. In consequence of the 





