276 OLDER MESOZOIC FLORAS OF UNITED STATES.. 
decided to visit Williams College and endeavor to find the types of his 
figures of these. I accordingly arranged with Dr. Dale to meet him 
there on July 17, 1897, and look at the collection and try to hunt up 
certain specimens.. Every facility for this was placed at my disposal. 
I found two of the supposed cycadean trunks and took detailed notes 
upon them. One of those figured could not be found. Another 
proved to be merely an impression, but evidently that ofa cycadean 
trunk. It is tolerably clear and is described and figured below with 
the specific name given to it by Professor Fontaine. Dr. Emmons 
practically recognized it as a Cycadeoidea (see infra, p. 302, Pl. XLIII, 
Fig. 3). Another specimen was found which was never figured. It is 
a disk of a small trunk, faintly showing scars around the edge. As 
Professor Fontaine has not in the report to follow dealt with this 
specimen, the following note written with the specimen before me 
may as well be recorded: 
This is a thin segment of a small trunk. It consists of a gray 
coarse sandstone and is mainly a mere cast, but around the edge is a 
thin layer of a finer material on which there are faint indications of 
scars. The cross section is elliptical, 9 by 11 cm. The thickness - 
(length of the trunk) is from 2 to 3cm. On one side is a label with 
the words ‘‘Zamites, Stem of Cycad,” probably in Dr. Emmons’s 
handwriting. . ‘ 
Some time afterwards, at my request, Dr. Dale brought this speci- 
men to Washington, and, through the kindness of Professor Diller, 
the most promising portions were ground slightly in the hope that 
something of the internal structure might be revealed, but it proved 
to be only a-sandstone cast, all within being wholly structureless. 
Professor Fontaine, while sugawed in working up this collection, as 
presently to be mentioned, examined this specimen, andin a letter to 
me dated August 5, 1898, he says: 
The disk of sandstone which you examined to see if it might be a cycad trunk, 
seems to be a cross section of a cylindrical cast of an Equisetum. 
I am quite prepared to accept this conclusion. 
A year later arrangements were made for working up the collection, 
and on August 3, 1898, Professor Fontaine went to Williams College 
and made an exhaustive study of the material, occupying over two 
weeks. He described all the species, but did not then figure them, 
making an arrangement with Dr. Dale to have the types that he 
selected to be figured sent to the University of Virginia and to the 
‘United States Geological Survey, Division of Illustrations, where the. 
drawings could be made with all necessary care. Professor Fontaine 
elaborated his notes and completed his report in January, 1899, and the 
types not figured by him were drawn in the Division of Illustrations 
during the winter and spring. They were returned-to Williams Col- 
lege in June. 
This careful recension by Professor Fontaine of the classic collection 
