2 Wurd Species of Cycadeo idea from Maryland. 



told that the subject came at last to monopolize its proceedings 

 and that considerable asperity was ultimately created in the dis 

 cussions, so much so that all at length became tired of the subject 

 and it was allowed to drop completely out of their deliberations, 

 never to be revived. At all events, it was nearly twenty-five 

 years before any one's attention was again prominently called 

 to these objects. 



Mr. Tyson, however, had taken the trouble during the time 

 that the question was uppermost to have photographs made of 

 one of these specimens. He had also found much silicified wood 

 in the Iron Ore beds, and he caused some large blocks of this to 

 appear in the same view with the cycad trunk. Prints of this 

 view were sent to many of the prominent paleontologists of this 

 country and Europe. Among those receiving them was Dr. J. S. 

 Newberry, and since his death his copy has been found at the 

 Geological Museum of Columbia University and kindly placed 

 in my hands by Dr. Arthur Hollick. In 1885 Mr. W J McGee, 

 having learned that these specimens were still in the Museum of 

 the Maryland Academy of Sciences, was permitted, through the 

 kindness of the president of the Academy, Professor P. R. Uhler, 

 to have a series of photographs taken of the two principal trunks. 

 Copies of these photographs are also in my hands, and they were 

 shortly after reproduced and published, forming plates clxxiv 

 to clxxx of Professor Fontaine's Potomac or Younger Mesozoic 

 Flora.* As stated in my former paper, Professor Fontaine de 

 scribed these trunks under the name Tysonia Marylandica, but 

 as they do not belong to a genus distinct from those of Europe, 

 Capellini and Solms-Laubach restored them to Buckland's genus 

 Cycadeoida. The specimens are now in the Geological Museum 

 of Johns Hopkins University. 



Soon after the appearance of Professor Fontaine's work in 

 1890, Professor Uhler succeeded in obtaining a few additional 

 fragments, but interest in the subject was not fairly aroused until 

 about the year 1893, when Mr. Arthur Bibbins of the Woman's 

 College of Baltimore began his remarkable series of discoveries 

 which has resulted in bringing to light no less than fifty-nine 

 specimens of these interesting objects. An account of his re 

 searches and results was published by me in 1894,f at which time 



* Monographs of the U. S. Geol. Survey, vol. XV, Atlas. 



t Recent Discoveries of Cycadean Trunks in the Potomac Formation 

 of Maryland. Bull. Torr. Bot. Club, vol. XXT, No. 7, July 20, 1894, pp. 

 291-299. 



