200 a'HE JOURNAL OF UOTAXY 



plete enumeration was publi.shed by Lehniann — Planter PreissinncE — 

 in 1844. 



The 9tli Piigillus, which has no preface, is entirely occupied 

 with Potentilla — a genus to which Lehmann paid particular atten- 

 tion — including a complete enumeration of the species, with syno- 

 nyms : on the title of this and the next, as well as on that of Plantm 

 Preissiance the author's name appears as " Christian Lehmann." The 

 10th, also without preface, contains only Hepatics, with an index to 

 all the parts. 



There is no need to discuss Lehmann's other botanical work, 

 which is sufficiently well known, but it may be well to call attention 

 to the account of his herbarium given in Gard. Chron. 1860 (p. 362) 

 by Edward Otto (who succeeded him as Curator of the Hamburg- 

 Garden ), which is likely to be overlooked. The herbarium was sub- 

 sequently broken up and dis))osed of in parts, the larger portion being 

 at Stockholm (see Alph. de Candolle, Phytograjyhie, p. 427). 



James Britten. 



LXXX. Dates or Publication. 



A MODERN and distinctly reprehensible practice on the part of 

 certiiin publishers, that of eliminating the date of publication from 

 the titlepages of individual volumes, should be severely condemned, 

 especially in scientific literature. The matter is perhaps of slight 

 importance in the case of ordinary ephemeral literature, but all sys- 

 tematists will agree that the date of publication is of prime importance. 

 A case in question is presented by the late F. Manson Bailey's Com- 

 prehensive Catalogue of Queensland Plants, regarding which I 

 recently had occasion to determine the date of publication. I received 

 a complimentary copy from the autlior in May 1913, witli Mr. Bailey's 

 card dated March 25, 1913. No date appears on the titlepage. The 

 prefatory notes were dated November 22, 1909, and this would 

 naturally be the date accepted by an individual who made only 

 a casual examination of the work. On page 835, following the short 

 introductory^ paragraph under Addenda and Corrigenda, the date 

 December 1912, appears, which is probably the date on which the 

 manuscript for this particular part of the work was submitted to the 

 printer. Mr. C. T. White, Government Botanist, Brisbane, Queens- 

 bind, informs me, under date of March 30, 1920, that the Govern- 

 ment Printer could give him no definite information as to the exact 

 date of publication of the work. He states that a single volume, 

 lacking a few of the coloured plates, was in Mr. Bailey's hands at the 

 end of 1912, but that delivery of it for distribution did not take 

 place until March. 1913. Most of the local letters of acknowledge- 

 ment are dated March 1913. It would seem then that March 1913 

 should be accejited as the date of issue of the work in question. 



Elmer D. Merrill, 



Bureau of Science, Manila. 



