Now Ready. 

 A NEW CATALOGUE OF BKETiSH HEMIPTERA-HETER- 



OPTERA, by EDWARD SA.UNDERS, F.R.S. HOMOPTERA by JAMES 

 EDWARDS, F.E.S. Price 9d., or printed on one side only for labels, Is. 6d. 

 MILNE, TAUNAHILL and METHVEN, The Mills, Horse Cross, Perth. 



Just Published. Crown 8vo. Cloth Oilt, Gilt Tops, 3s. 6<2. 



WILD BEES, WASPS & ANTS, and other STINGING INSECTS. 

 By EDWARD SAUNDERS, F.R.S., P.L.S., &c. With numerous illustra- 

 tions in the text and Four Coloured Plates by Constance A. Saunders. 



GEORGE ROTJTLEDGE & SONS. Ltd., Broadway House, London, E.C. 



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

 from the author's drawings : 



\ MONOGRAPHIC REVISION AND SYNOPSIS OF THE 



'" TRICHOPTERA OF THE EUROPEAN FAUNA. By Robert McLachlan, 

 F.R.S., F.L.S., &o. Price, £3 10s. 



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



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



Berlin : Friedlander und Sohn, 11, Carlstrasse. 



Seale of Charges for Advertisements. 



Whole Page £2. Half Page £1 Is. Quarter Page 12s. 6d- 



Lowest charge, 3s. 6d. up to 5 lines; 6d. per line afterwards. 

 Repeated or continuous Advertisements per contract. 

 There is no charge for Lists of Duplicates and Desiderata. 



"NATURE, 



11 



A WE ELY ILLUSTRATED JO JRNAL INCE. PRICE 6d. 



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

 Science, contributed by the most eminent scientific writers of the day. It also 

 contains Reviews of all recent scientific works ; Correspondence Columns, which 

 form a medium of scientific discussion and of intercommunication among men of 

 Science ; Accounts of the leading Scientific Serials ; Abstracts of the more 

 valuable papers which appear in foreign journals ; Reports of the Proceedings of 

 the Principal Scientific Societies and Academies of the World; and Notes on all 

 matters of current scientific interest. 



Yearly 



Half-yearly 



Quarterly 



M.oney Orders to be made payable to MA.CMILLA.N and CO., Ltd 

 Office: St. M.artin's Street, London, W.C. 



