ILLUSTRATED CATALOGUE OF BRITISH FOSSILS. 



Six plates of this Catalogue are issued with this number : the letter-press 

 to accompany the plates will not be issued until the whole Group of Amorphozoa 

 is completed. 



The order of selection will not be continuous from the lowest to the highest 

 class, nor, vice versa; but such groups will be taken as can be most com- 

 pletely done, or as from the existing state of scientific literature it may 

 be deemed most adviseable to do on account of utility. Every group commenced 

 will be forthwith carried on to conclusion ; and it will be so arranged that the 

 Volumes of the Catalogue will be complete in themselves, and separate covers 

 will be issued for binding. The Plates will be issued in the Supplements, and 

 their numbers will be alphabetically by letters and by figures, so that additions of 

 new species or genera can at any time, even in future years, be made without 

 destroying the proper continuity of the work. For instance, for all the genera 

 beginning with A, the plates will be numbered Al, A2, &c. ; beginning with B, will 

 be Bl, B2, and so on and if at any future time additions are made, the plates illustrat- 

 ing those will be numbered Al*, A2*, and so on. When a group is completed, the 

 part of the catalogue containing it may be purchased separately ; but the price 

 of all these parts will be slightly higher, in the proportion of 10s. to 7s. 6d., than 

 the cost of the extra supplements containing the figures issued with "The 

 Geologist." 



NOTICE TO SUBSCRIBEKS. 



In consequence of the issue of Supplements, the subscriptions for the half-year 

 terminating in December next, have been raised to 7s. 6d, which will include all 

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 be sold at Is. 6d.; but the Trade can subscribe upon the usual terms. All 

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The subscription, 7s. 6d., can be remitted in stamps, or by a Post Office ordsr 

 on the Strand Post Office, payable to 



Samuel J. Mackie. 



Geologist Office, Editor and Proprietor. 



25, Golden-square. Regent-street. W. 



# * # The paging of the c< Supplement" runs on continuously with the paging 

 of the magazine ; the only distinction of the " Supplement" being an indication 

 at the foot of its first page, as at page 265, No. 42. 



CORRESPONDENTS. 



Dr. Hoener, Vienna; W. Pengelly, Esq., Lamorna; Mrs. M. A. 

 Acworth, Barnet; Rev. 0. Fisher, Elmstead ; R. Mortimer, Esq., 

 Fimber; Dr. Bevan, Newport, Monmouthshire ; Edw. Harrison, 

 Esq., Leeds ; Geo. Snow, Esq., Berwick ; F. Smith, Esq., 

 Gloucester; H, G. Salmon, Esq., Truro; F. Drake, Esq., 

 Leicester; C. C. Blake, Esq., Brunswick Square. 



BOOKS, ETC., RECEIVED. 



" Canadian Naturalist," Vol. VI , Nos. 1 to 4. 

 " On Flint Implements from the Drift near Bedford." By James 

 Wyatt, F.G.S. Bedford: 1861. 



" A Glossary of Mineralogy." By H. W. Bristow, F.G.S. 



