IMPORTANT NOTICE. 



From this date the First Series of this Magazine (18 S4 -1889) can 

 be obtained only in complete Volumes, bound or unbound. 



A limited number of sets, from Vol. x to Vol. xxv inclusive, are 

 offered at the reduced price of £2 15s. per set net (in parts), or of five 

 consecutive Vols, at £1 per set net (if bound, is. per Vol. extra). 



Owing to inequality in stock, certain of the Vols, i to ix can be had 

 separately at 10s. each. 



The Editors will pay 2s. each for clean copies of Nos. 7, 9, 20, 

 and 21 of the First Series. 



Apply to the Publishers. 



May l^th, 1893. 



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

 from the author's drawings : 



A MONOGRAPHIC REYISION- AND SYNOPSIS OF THE 



^^ TRICHOPTERA OP THE EUROPEAN FAUNA. By Robert McLachlan, 

 F.R.S., F.L.S., &c. Price, £3 10s. 



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



London : Gurney & Jacksox, 10, Paternoster Rovp-, E.G. 

 Berlin r Frtedlander und Sohn, 11, Carlstrasse. 



Scale 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. 

 Hepeated or continuous Advertisements per contract. 

 There is no nhai'ge for Lists of Duplicates and Desiderata. 



"NATUEE/^ 



A WESKLY ILLUSTRATED JOURNAL OP SCIENCE. PRICE Bd. 



■" Na.ture" contains Original Articles on all subjects coming within the domain of 

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

 contains Reviews of all recent scientific works ; Cm^respondenoe 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 Acadomievs of the World ; and Notes on all 

 matters of current scientific interest. 



.HUBS<JH,£PT1C>NS TO "NATURE." 



(To all placet Abroad). £ s. d. 



Yearly 110 6 



Half- Yearly 15 Q 



Quarterly 8 



£ i. d. 

 STearly 18 



H»lf- Yearly ... ... 14 6 



Quarterly 7 6 



Money Orders to be made payable to MAGMILLAN and CO., Ltd. 

 Office: St. lifartin's Street, London, W.C. 



