82 D. M. JOHN, J. H. PRICE, C. A. MAGGS & G. W. LAWSON 



50. Sourie, R. 1954. Contribution a 1'etude ecologique des cotes rocheuses du Senegal. Mem. Inst.fr. 



Afr. noire 38 : 1-342 +[!]. 



Note. From the note on p. 117, it is clear that the algae were worked on mainly by J. Feldmann, 

 but that Sourie took account of some of the views of Dangeard as expressed in the latter's 

 memoir on the Cap Vert (Dakar) peninsula algae. Since the exact contribution of the various 

 people involved is in doubt, we have left the reference in the name of Sourie, who seems to have 

 exercised overall authorship. 



51. 1954. Principaux types de zonations verticales des algues sur le littoral rocheux de la presqu'ile 



du Cap Vert (Zone intercotidale). Rapp. Commun. int. hot. Congr. 8 (17) : 151-153. 



Steam, W. T. 1957. An introduction to the Species Plantarum and cognate botanical works of 

 Carl Linnaeus [pp. V + VIX + 1-176]. In W. T. Steam, Carl Linnaeus. Species Plantarum. A Fac- 

 simile of the First Edition 1753. I. XIV + 176+ [14] + 560+ [6] pp. London. 



52. Vickers, A. 1897(?) ['1896']. Contribution a la flore algologique des Canaries. Annls Sci. nat. 



(Bot.) ser. 8, 4 : 293-306. 



Note. The date is somewhat difficult to cite as there is some confusion regarding the dates 

 of various issues. It is possible that preprints were issued in 1896 and the date is usually so cited. 

 The copy in BM has certain of the individual part wrappers remaining, and that for parts 1-6 

 is dated November 1897; the work here relevant was issued in parts 19-20 of volume 4. Since 

 the wrappers of parts 1-2 of volume 5 are dated March 1898 and there are only 24 parts in total 

 in volume 4, it seems likely that parts 19-20 were issued early in 1898; however, as it remains 

 possible that all the parts of volume 4 were issued on the same date, we have maintained 1897 (?) 

 as the possible earliest date. The cover of the BM separate of this individual work (preprint or 

 reprint?) bears the erroneous information 'Septieme serie'. 



Waern, M. 1952. Rocky shore algae in the Oregrund Archipelago. Acta phytogeogr. suec. 30 : 

 XVI+l-298+[2]. 



