N. A. INVERTEBRATE PALJLONTOLOGY. 721 



Dawson, J. W. (Sir). — On Ehizocarps in the Palaeozoic Period. Cana- 

 dian Bee. Sci., vol. i (1884-'85), pp. 19-27, fig. 23. 1884. Montreal. 



This paper was read before the A. A. A. S., August 16, 1883, at Min- 

 neapolis. 



The author describes two species of Sporangites from Brazil, discusses 

 their occurrence in various parts of North America, and concludes that 

 the facts he enumerates do not furnish any positive proof that the abun- 

 dant Sporangites of the Erian period were the fructification of Ehizo- 

 carps, but they establish a certain probability of this, and invite to 

 further researches. 



Dawson, J. W. (Sir). — Notes on Eozoou Canadense. Canadian Bee. Sci., 

 vol. I (1884-'85), pp. 58, 59. 1884. Montreal. 



Abstract of a paper read before the British Association in 1883, at 

 Soutbport. 



The author stated that the Eozoou, in its ordinary condition as min- 

 eralized by serpentine, presents the simplest kind of mineralization of 

 a calcareous fossil ; that in which the original calcite walls still exist, 

 with no change except a crystallization of the calcite, common in the 

 fossils of newer formations, and with the cavities filled with a hydrous 

 silicate, which was evidently in process of deposition on the sea-bot- 

 tom on which Eozoon is supposed to have lived. 



Dawson, J. W. (Sir).— The Mesozoic Floras of the Eocky Mountain 

 Eegion of Canada. Canadian Bee. Sci., vol. i (1884-'85), pp. 141-143. 

 1885. Montreal. 



Abstract of a paper read before the Eoyal Society of Canada, May, 

 1885. {See other abstracts and reviews of the same paper.) 



Dawson, J. W. (Sir). — Ancient Insects and Scorpions. Canadian Bee. 



Sci., vol. I (1884-'85), pp. 207, 208. 1885. Montreal. 



A notice of the discovery of insects in the Silurian, that the Spanish 

 Protohlattina suggests the existence of Silurian forests producing some 

 kind of succulent and nutritious vegetable food, while it also furnishes 

 an explanation of the possible means of sustenance of the carnivorous 

 scorpions. 



Dawson, J. W. (Sir). — A Modern Type of Plant in the Cretaceous. 

 Science, vol. v, No. 125, p 514, fig. on p. 514. June, 1885. Cambridge. 



Describes and figures Brasenice antiqua, from the Upper Cretaceous 

 of the South Saskatchewan Eiver. The specimens come from the Belly 

 Eiver series of the Canadian survey near Medicine Hat. These beds 

 are Upper Cretaceous, and hold fossils some of which resemble those of 

 the Laramie group ; others those of the Pierre group. The author 

 himself assisted at the disinterment of a Dinosaur of the genus jDic- 

 lonius from beds overlying those in which the leaves occur. 

 H. Mis. 15 46 



