SHEKBORN : THE WRITINGS OF CAPTAIN THOMAS BROWN. 359 



4. " Illustrations of the Fossil CoTiclioloo;y of Great Britain and 

 Ireland." London, 1849 (i.e. 1837-1849). 4to ; pp. 273, 98 pis. 

 4a. "Illustrations of the Fossil Conchology of Great Britain and 

 Ireland." .Edinburgh, 1834. 4to ; parts 1-12. (Engelmann.) 

 4b. " Fossil Conchology of Britain and Ireland." London, 1839. 4to. 

 25 numbers, of which 1-14 were issued by Messrs. Smith, Elder, 

 and Co. in 1839. (Engelmann.) 



We can take these three entries together : 4 is the correct one, 

 4a seems to be an error of Engelmann's, 4b seems to be a muddle. 

 In Mr. Sykes' Library and also in the British Museum are pre- 

 served a series of numbers in the original wrappers. From them 

 we learn the collation which follows : — 



Date. No. Pages. Date. 



16 65-68 



17, 18 69-80 



1837 



19, 20 81-88 



21 89-108 1843 



22,23 109-116 1844 



24, 25 117-124 



26, 27, 28 125-136 



1845 



29 

 30 

 31 

 32 

 33 

 1839 34 



1838 



61-64 18431 35 1849 



The numbers in the British Museum were most of them dated in 

 pencil as received, the year coming first, then the month, then 

 the day, then the press-mark, but more exact information being 

 forthcoming by the kindness of Messrs. Smith, Elder, & Co., 

 I shall give that. Moreover, it appears that Nos. 1-12 were 

 published in Edinburgh, and sent to Messrs. Smith, Elder, & Co. 

 for sale, while the later numbers were published in London by 

 Messrs. Smith, Elder, & Co. themselves. They write me under 

 date May 30th, 1905 : " ' Fossil Conchology' extended to 35 parts, 

 of whicb parts 1-8 were received in 1837, parts 9-12 in 1838, 

 parts 13 and 14 in 1839, and parts 25 to 28 in 1845." To 

 these I can add, No. 15 received by the British Museum 

 March 6th, 1843, No. 21 on November 17th, 1843, Nos. 22 and 

 23 on July 9th, 1844, Nos. 24 and 25 on April 18th, 1845. 

 The dates affixed to the parts given above are therefore approxi- 

 mately correct, and we must wait further evidence before being 

 able to define them more exactly. At page 53 the setting of the 

 type slightly alters. In the ''Elem. Foss. Conch.," 1843, the 

 advertisement says — " to be completed in 25 parts, of which 22 

 are out." 

 " The Elements of Fossil Conchology." Edinburgh, 1843, 12mo ; 

 pp. 1-138, 12 pis. 



1 Probably earlier ; on p. 64 the Trans. Manch. Geol. Soc, i, 1841, is quoted. 



