316 



the following table of the substances analysed by him in the course 

 of the investigation, — 



Platinum salt of Pyridine, 

 „ „ Picoline, 



Liitidine, . . . . 



Platinum, Salt of Lutidine, 



,, 5, Methyllutidine. 



,, ,, Collidine, 



,, ,, Chinoline, 



Lepidine, . . . . 



Platinum salt of Lepidine, 



Hydrochlorate of Lepidine, 



Nitrate of Lepidine, 



Bichromate of Lepidine, . 



Hydriodate of Amyllepidine, 



Ci" H^N, HCl, Pt Cl^ 

 C'2 IV N, H CI, Pt C12 

 Ci* H^N. 



Ci* H^N, H CI, Pt C12 

 Ci« HiiN.HCl, PtCl- 

 (;i« HiiN, HCl, Pt C12 

 CIS 11?^^ n ci^ Pt CI2 



C-" H»N, 



C2« H^N, H CI, Pt CI2 



C-0 H^N, N0% HO. 

 C20 H^N, 2Cr 0\ HO 



C30 H19 ;n_ hi. 



Monday, 30th April. 

 The Very Rev. Principal LEE, V.P., in the Chair. 

 The followinof Communications were read: — 



1 . Remarks on the Coal Plant termed Stigmaria. By the 

 Rev. Dr Fleming. 



The author, after noticing the proofs of Stigmaria being the root 

 of Sigillaria, called attention to the external organs, known formerly 

 as the leaves, and more recently as the rootlets of the former. He 

 stated that in the many examples of stigmaria which he had exa- 

 mined, he had never observed these rootlets articulated to the stem 

 by anything resembling a ball-and-socket joint, considering the 

 appearance which had led to this notion as due to shrinkage and 

 state of preservation. 



The views of Dr Hooker, as given in his valuable paper on Stig- 

 maria in the " Memoirs of the Geological Survey," vol. ii., p. 437, 

 were next considered. This acute observer, from an examination 

 of a particular specimen, concluded that these rootlets, within the 

 body of the stem, form obconical or flaggon-shaped bases, the sum- 



