196 president's address, 



series of examples of protective mimicry amongst tropical 

 butterflies of both hemispheres. 



At the meeting of January 21st, Mr. C. F. Harkus in the 

 chair, Mr. D. Woolacott, M.Sc, gave a lecture entitled ''Some 

 Notes on the Permian Rocks." The lecture was an admirable 

 account of the Permian formation of the district, illustrated by 

 lantern views of quarries, cliff-sections, and rock structures. 



On February i8th, under the chairmanship of the Rev. J. 

 M. Hick, the evening was devoted to a lecture by Colonel 

 Adamson, entitled " Notes on Burmese Butterflies." Colonel 

 Adamson gave many interesting reminiscences of his ex- 

 periences as a collector in Burmah, and called special attention 

 to a number of remarkable instances of seasonal dimorphism 

 and protective mimicry. These were illustrated by examples 

 from his own collection. 



At the last meeting on March i8th, Mr. R. Adamson took 

 the chair. Extracts from the Hancock Prize Essay by Mr. 

 James Caygill, of Consett, were read by Mr. E. L. Gifl, and 

 Professor G. S. Brady, F.R.S., then read his ''Report on 

 Marine Dredging in 1901." He gave an account of a two 

 days' dredging expedition carried out last July off" the 

 Northumbrian coast, and showed microscopic mountings of 

 several of the most interesting captures. His paper wiU 

 shortly appear in the Transactions. Some well preserved 

 specimens of the Lepidoptera larvae to be met with in March 

 were exhibited by Mr. D. Rosie. 



Birds of Ravenglass. 



Apart from the meetings of the Club in 1890 and 1891, I 

 visited the most interesting colony of birds nesting at Raven- 

 glass. The birds and their eggs are most carefuUy protected 

 by Lord Mancaster, and can only be seen by visitors at 

 appointed times, and a reliable gamekeeper is always present 

 to prevent the shooting of birds or the taking of eggs. 



The notes I made on my visits I think may be of some 

 interest. They are founded partly upon my own observations, 

 and partly on information supplied by the gamekeeper : — 



