28 IN MEMORIAM : WILLIAM CRAWFORD WILLIAMSON, LL.IX, F.R.S. 



as Sternbergiae.' However, another 17 years elapsed before he took up 

 fully his life work, and some three years more passed before he published 

 his first classic Royal Society's memoir on the 'Organisation of the 

 Fossil Plants of the Coal Measures.' This period of 20 years may 

 be regarded as one of preparation, during which he wrote many 

 reviews for the magazines (' London Quarterly,' 'Good Words/ etc, 

 and so improved his style; during which appeared his well known 

 Ray Society's Monograph on the ' British Foraminifera/ and during 

 which a great deal of good microscopical work was carried out, and the 

 structure of Zamia (now known as Williamsonia) gigas, was 

 investigated. The following papers belonging to this time may be 

 cited, as follows : 'On the Structure and Development of the Scales 

 and Bones of Fishes VOn Volvox glcbator' ; ' On Sternbergia ' ( 1 85 1 ) ; 

 ' Minute Structure of a species of Fatijasina ' ; 'Anatomy of Melicerta 

 fingens $ i 'Further Elucidations of the Structure of Volvox globator' 

 ( X 8S3); On the Restoration of Za?7iites gigas" (1854). 



In 1854 he was elected a Fellow of the Royal Society, so that at 

 his decease he was one of the oldest Fellows of the Society. Papers 

 followed 'On Histology of Dental and Allied DermalTissues'(i854-57). 

 Some technical medical papers appeared in 1857; 'The Recent 

 Foraminifera of Great Britain/ a beautifully illustrated work pub- 

 lished by the Ray Society, London (1858), whose merits received 

 recognition from the highest authorities at the time of its appearance ; 

 ' Histological Features of the Shells of the Crustacea ' (i860) ; ' The 

 Anatomy and Physiology of Foraminifera ' (1865) ; 'On a Cheiro- 



Footprint 



The 



Amoeba ' (1866) ; ' The Fresh-water Sponge' ; ' Contributions towards 

 the History of Zamia gigas' (1868) j and here commences his first 

 paper of that continuous stream of palseobotanical researches which 

 extended over well nigh thirty years, 'On the Structure of the Woody 

 Zone of an Undescribed Form of Calamite 7 (1868); followed by a 

 paper ' On the Structure of an Undescribed Type of Calamodendron 

 from the Upper Coal Measures of Lancashire' (1868); 'Additional 

 Note on the Structure of Calamites' (1869); 'Structure and Affinities 

 of some Exogenous Stems from the Coal Measures'; 'What is 

 Bathybius?' (1869); 'On the Organisation of the Stem of Calamites' ; 

 'On the Structure of the Gizzards and Teeth of the Rotifera'; 'On 



a New Form 



Lancashire 

 annia Daw 



'On the Structure of the Dictyoxylons of the Coal Measures'; 'On 

 the Classification of the Vascular Cryptogamia, as affected by Recent 

 Discoveries amongst the Fossil Plants of the Coal Measures' ; ' On the 

 Organisation of an Undescribed Verticillate Strobilus from the Lower 



Naturalist, 



