228 



Mycologia 



viously been taken. Mr. Jackson proved a keen observer, detect- 

 ing a new species on Car ex comosa with its probable aecia on 

 Smilax, and both aecia and telia of Puccmia subnitens, the first 

 collection of it made on the Atlantic coast, beside much other ser- 

 viceable information. He also made a trip to Newfield, N. J., on 

 May 15, and secured telial material of cedar rusts from the region 

 made familiar by the late Mr. J. B. Ellis. 



The season's cultural work was, with the exception of some 

 cedar rust cultures made by Mr. Kern, in the hands of Mr. A. G. 

 Johnson, a graduate of the South Dakota Agricultural College, 

 and a former special student of Washington University, St. Louis, 

 who was recommended for the position by Dr. E. W. Olive. He 

 was diligent and enthusiastic in the work, and made successful 

 cultures of the largest number of species secured in any one 

 season during the ten years that the cultural work has been in 

 progress. 



In this series of studies the amplitude of the results is largely 

 dependent upon the kindly assistance of correspondents in provid- 

 ing culture material and in communicating field observations. 

 Acknowledgments are due this year to Mr. E. Bethel, Denver, 

 Colo., who is far in the lead with more than fifty collections of 

 culture material, and to Messrs. H. S. Jackson, Newark, Del., 

 J. M. Bates, Red Cloud, Neb., R. E. Stone, Auburn, Ala., A. O. 

 Garrett, Salt Lake City, Utah, Elam Bartholomew, Stockton, 

 Kans., E. W. Olive, Brookings, S. D., E. W. D. Holway, Min- 

 neapolis, Minn., H. J. Webber, Ithaca, N. Y., T. D. A. Cockerell, 

 Boulder, Colo., J. L. Sheldon, Morgantown, W. Va., A. B. Sey- 

 mour, Cambridge, Mass., G. P. Clinton, New Haven, Conn., 

 P. B. Kennedy, Reno, Nev., Guy West Wilson, Fayette, Iowa, 

 George L. Potter, Lima, Ind., J. J. Davis, Racine, Wis., A. R. 

 Sweetser, Eugene, Ore., C. W. Edgerton, Donald Reddick and 

 C. J. Humphrey, all three of Ithaca, N. Y., W. A. Kellerman, 

 at the time in Guatemala, C. G. Lloyd, Zacatecas, Mex., and J. 

 Dearness, London, Ont. This enumeration gives scanty credit 

 where in many cases special trips, often of many miles, were 

 undertaken at our request to secure at a definite time either dry 

 material or live hosts, or to make observations, which would 

 further a particular inquiry. Mention should also be made of 



