BEPERBED TO IIST THE TEXT 517 



Vernon, R. D. (12) On the geology and palaeontology of the Warwick- 

 shire coalfield. Quart. Joum. Oeol. Soc. vol. Lxvni. p. 587. 



Vetters, K. L. (84) Die Blattsteile der Cycadeen. (Inaug. Diss.) Leipzig. 



Vierhapper, F. (10) Entwurf eines neuen Systems der Coniferen. 

 Jena. 



Walkom, A. B. (17) Mesozoic Floras of Queensland. Queensland Geol. 

 Surv. Publications, No. 259. 



Ward, L. F. (85) Synopsis of the Laramie group. &h Ann. Rep. U. S. 

 Geol. Surv. 



(87) Types of the Laramie Flora. Bull. U. 8. Oeol. Surv. xxxvn. 



(88) The geographical distribution of Fossil Plants. 8th Ann. 



Sep. U. S. Geol. Surv. (1887-88). 



(94) Fossil Cycadean trunks of North America, with a revision of 



the genus Gycadeoidea Buckland. Proc, Biol. Soc. Washington, 

 vol. IX. p. 75. 



(94^) Recent discoveries of Cycadean trunks in the Potomac 



formation of Maryland. Bull. Torrey Bot. Club, vol. xxi. No. vii. 

 p. 291. 



. (94') The Cretaceous Rim of the Black Hills. .Joum. Geol. vol. li. 



No. iii. p. 250. 



(96) Some analogies in the Lower Cretaceous of Exirope and 



America, l&k Ann. Bep. U. S. Geol. Surv. 



(98) Descriptions of the species of Gycadeoidea or fossil Cycadean 



trunks thus far determined from the Lower Cretaceous rim of the 

 Black Hills. Prcc. U. S. Nat. Mus. vol. xxi. p. 21. 



(00) Elaboration of the Fossil Cycads in the Yale Museum. 



Amer. Joum. Sci. vol. x. p. 327. 



(00^) Description of a new genus and 20 new species of fossil 



,; Cycadean trunks from the Jurassic of Wyoming. Proc. Washington 



I Acad. Sci. vol. I. p. 253. 

 -^— (00') Report on the petrified forests of Arizona. Depart, of the 

 Interior, Washington. 



(04) A famous fossil Cycad. Amer. Joum. Sci. vol. xvrrt. p. 40. 



Warming, E. (77) Recherches et remarques sur les Cycad^es. Oversigt 



K. D. Vidensk. Selslc. Forh. (Copenhagen), p. 16. 

 Warren, E. (12) On some specimens of fossil woods in the Natal Museum. 



Ann. Natal Mus. vol. n. pt. iii. p. 345. 

 Webber, H. J. (01) Spermatogenesis and fecundation of Zamja. U.S. 



Dpt. Agric. Bur. Plant Industry, Bull. No. ii. 

 Weiss, C. E. (72) Fossile Flora der jungsten Steinkohlen-formation und 



des Rothhegenden im Saar-Rhem-Gebiet. Bonn, 1869-72. 

 — — (74) Note in Zeitsch. Deutsch. Geol. Ges. Bd. xxvr. p. 616. 



(79) Die Flora des Rothliegenden von Wiinschendorf bei Lauban 



in Sohlesien. Abh. geol. specialkarte von'Preussen, Bd. iil. Heft i. 

 p. 1. 



Weiss, F. E. (12) Report of the 80th meeting (Portsmouth) of the 

 British Assoc, for the Advancement of Science, p. 550. 



