PROCEEDINGS OF THE SOCIETY. 147 



displays well-marked whorls of three or four papill?e at regular 

 intervals, which give it a nodulose appearance. The male 

 elements are found in the region of the swellings. A transverse 

 section shows a remarkably highly developed cellular system for a 

 fresh-water alija. On the outside there is a cortical laver, the 

 cells of which are richly charged with colouring matter. A layer 

 of transoarent cells follows, and in the hollow centre there is a 

 series of delicate filaments bearing apparatus for fertilisation," 



Mr. John Ren wick exhibited, on behalf of Mr. Thomas Service, 

 a fine series of sharks' fossil teeth, belonging to the genus Lamna, 

 from a phosphate deposit in Algeria, about 100 miles inland and 

 1,000 feet above sea-level. They appear to belong to Miocene or 

 Middle Tertiary Age. Similar teeth were brought up in the 

 dredge by the " Challenger " expedition from the bed of the 

 Atlantic at a depth of two miles. In the " Challenger " specimens 

 the cusps were decayed away, but the teeth from Algeria are 

 perfect. Mr. John Young, LL.D., made some interesting remarks 

 resfardino' this exhibit. 



Adoxa Jloschatellina, Linn., and JS^eottia Nidus-avis, E-ich., 

 from Carrick Hill, Maybole Parish, and Hyoscyamus niger, Linn., 

 from the Heads of Ayr, in the same parish, were sent for 

 exhibition by Mr. Thomas Wilson, Ayr. ^STone of these plants is 

 recorded in Mr. John Smith's Botany of Ayrshire for this parish. 



Mr. John Paterson read the following papers: — (1) " On the 

 Distribution of the Chiff-ChafF (Phjlloscopus rufus (Bechst.) ) in 

 the Clyde Area" (see page 48); (2) " ISTotes on the Summer 

 Bird-life of Ailsa Craig." 



A paper entitled '' Meteorological Notes and Remarks upon 

 the Weather during the Year 1896, with its General Effects upon 

 Vegetation, " by Mr. James Whitton, Superintendent of Parks, 

 was held as read (see page 105). 



3ed August, 1897. 



Mr. Robert Dunlop in the chair. 



The following gentlemen were elected as Ordinary Members of 

 the Society: — Messrs. Michael Cuthbertson, F.R.H.S., Sunny 

 Park Nurseries, Rothesay ; and John Mackie, Crofthead, 

 Neilston. 



