Feb., 1904 .] Index to Uredineous Culture Experiments. 
79 
College. More fruitful results were obtained by Thaxter in 1887 
and again in 1889, — the connection between the several species of 
Gymnosporangium and associated Roestelia occurring in this 
country being satisfactorily established, which may be found in 
print in the Proceedings of the American Academy of Arts and 
Sciences, Boston ; and Bulletin 134, Conn. Agr. Exp. Sta. Pam- 
mel repeated the experiment verifying connection in case of one 
of the species (la. Hort. Soc. Rep. 1893), the same also by 
Stewart and Carver (Proc. la. Acad. Sci. for 1895, Yol. 3; same 
in N. Y. Exp. Sta. for 1895). 
No connections between Uredineous forms were then experi- 
mentally determined — except that Howell (in 1890) showed the 
three stages of the Clover Rust to be genetically related, and 
Clinton (in 1894) t'™ stages of the Bramble Rust — until 
1899, when extended and important work was reported b}" Arthur 
and by Carleton. The latter dealt with the Cereal Rusts only, 
making sowings almost exclusively of Uredospores mainly from 
Wheat, Oats, Barle}^ R}'e and Maize, on the same and on differ- 
ent host species. The interesting results were published as Bulletin 
No. 16, U. S. Dept. Agr. Div. Veg. Physiology and Pathology, 
April 23, 1899. 
Arthur communicated his first results to the public in a paper 
read before the A. A. A. S., Botanical Section, Columbus, Ohio, 
August, 1889, and the same was published in the Botanical 
Gazette, 29 : 268-276, April, 1900. Of eleven .species of Uridineae, 
the aecidial and teleutosporic forms were definiteh^ connected b}" 
these cultures. In the Journal of Mycology (8:51-6), June, 
1902, he reported cultures made in 1900 and 1901 — successful 
inoculations in eight cases, four being repetitions of previous!}- 
demonstrated connections, and the complete C5-cle for four being 
reported here for the first time. Arthur’s third report (cultures 
in 1902) was published in the Botanical Gazette ('35 : 10-23) for 
Januar}’-, 1903. The successful cultures made number eleven 
previously reported and seven reported for the first time. 
In 1902 cultures were undertaken by Kellerman. The first 
case of demonstrated connection was published in the Journal of 
Mycology (8 : 20), Maj^, 1902, and appeared in the same periodi- 
cal (9:6-13) in February, 1903. This showed seven successful 
inoculations, two of these not having been previously demonstra- 
ted. The second report (continuing his work during 1903), 
detailing more extended cultures, was given in part in the Journal 
of Mycology (9:109-10), May, 1903, and the year’s work is 
reported in full in the Journal, December Number, 1903. 
This brief historical outline shows that as yet comparatively 
few American mycologists have undertaken culture work to 
determine life cycles of our numerous species of Uredineae. 
