EXCHANGE. 



Desiderata : filigrammaria. — Apply Sidney Wilkinson, 6, Stanford Road, Kensing- 

 ton Court, London, W. 



BRITISH LEPIDOPTERA. 

 Tuesday, December 3rd, at 1 o'clock. 



]\/f"E. J. C. STEVEXS will offer at his Eooms, 38, King Street, 

 Covent Garden, London, W.C., the Collection of British Micro-Lepidoptera 

 formed by the late C. G. Barrett, F.E.S., and the Collection of British Macro- 

 Lepidoptera formed by the late Mr. Cross, of Ely, containing extensive series of 

 well set specimens in fine condition. 



Catalogues in course of preparation. 



TTANDSOME PITCH PINE CABINET, glass front, twenty 



drawers, corked, glazed, airtight, containing valuable collection of British 

 Lepidoptera, £15. Commoner Deal Cabinet, £7 10s. Also valuable collection of 

 Birds' Eggs. Sacrificing for benefit of Mission to Fishermen. 



J. ARMISTEAD, Newabbey, Dumfries, NB. 



Complete in one thick volume, royal 8vo, with 59 plates engraved on copper 

 from the author's drawings : 



A MONOGEAPHIC EEVISIOX AND SYNOPSIS OF THE 

 -^ TRICHOPTERA OF THE EUROPEAN FAUNA. By Robert McLachlan, 

 F.R.S., P.L.S., &c. Price, £3 10s. 



First Additional Supplement (with 7 plates). Price, 8s. 



London : Gurney & Jackson, 10, Paternoster Row, E.G. 



Berlin ; Priedlander und Sohn, 11, Carlstrasse. 



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Lowest charge, 33. 6d. up to 5 lines ; 6d. per line afterwards. 

 Kepeated or continuous Advertisements per contract. 

 There is no charge for Lists of Duplicates and Desiderata. 



"NATURE," 



A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. PRICE 6d. 



*' Nature " contains Original Articles on all subjects coming within the domain of 

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