The Fossil Plants of the Coal Measures. 93 



Syiii/'o/s. /^tiris. 



*■). W'l. Lepidodendion fuligino.sum, Lepidodendron muudum, Lepido- 

 dendron Spenceri, Lepidodendron parvulum, Rachioptetis 

 iniijqualis. Phil. Tj'ans., 1889. 



K. XN'II. Lyginodendron Oldhamium, Bowmaniles (Volkmannia) Daw- 

 soni, now Sphenophyllum Dawsoni. Calaniites. 1890. 



S. XVIII. Bowmanites (now Sphenophyllum) Dawsoni. Rachiopteris 

 ramosa, possibly R. hirsuta var. ramosa. 



T. "On the structure of the woody Zone of an undescribed form 



of Calamite." Alemoirs of the Manchester Literary and 

 Philosophical Society, 3rd Series, Vol. IV., Session 1868-9. 



V. "On a new form of Calamitean Strobilus." Memoirs of the 



Manchester Literary and Philosophical Society, 3rd Series, 

 Vol. IV., Session 1869-70. 



W "On some Anomalous Oolitic and Palseozoic forms of vegeta- 



tion." Royal Institution of Great Britain, Weekly Evening 

 Meeting, Feb. 16, 1883. 



X. "On the relations of Calamites to Calamodendron," with 



description of an intermediate form. Memoirs of the 

 Manchester Literary and Philosophical Society, 3rd Series, 

 Vol. X,, 1886-7. 



Y. A Monograph on "the Morphology and Histology of Stigmaria 



Hcoides." Palaontographical Society, Volume for 1886. 



Z. "On the Structure and Affinities of some Exogenous stems 



from the Coal measures." Monthly Microscopical Journal, 

 Aug. I, 1869. 



AA. "On the Organisation of Volkmannia (now Sphenophyllum 



Dawsoni). 



15B. XIX. Lepidodendron Harcourtii i);'(7;;o'«Z(i'r/', Halonia, Ulodendron, 

 Lepidophloios, Lepidostrobi, Lepidodendron Spenceri. 

 Phil. Trans., 1893. 



INTRODUCTION. 



The publication of Part I. of this Index seems to have 

 supph'ed a felt want. Hence, I now proceed further with 

 the experiment by issuing a second part. But experience 

 has shown that in dealing with some of the larger families, 

 e.g., the Lycopodiacea;, the scope of the publication must be 

 enlarged, as well as some slighter alterations adopted. So 

 far as the latter necessity is concerned, we have an example 

 in the group of the SphenopJiyllce, respecting which much 

 additional information has been obtained since the appear- 

 ance of Part I. It has become necessary to alter the 

 definition of the genus, so as not only to admit into it my 

 AsteropJiyllites SpJienopJiylloides {see Part I., p. 12), but also 

 the genus Boivmanites Dawsoni, as being the fructification 



