182 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



Not long afterward the Academy arranged with Dr. Michener to 

 place the collection in a more secure and accessible form, Curtis 

 having been largely instrumental in bringing this about. 



In mounting the collection a representative portion, or all when 

 the material was scanty, was taken from each packet and glued to 

 uniform slips of white writing paper 8 by lo cm., on which the 

 number, name, and source were written as given in the North Amer- 

 ican Fungi (see cut under no. 2881). In some cases the material 

 was placed in paper packets that were glued to the slips. These 

 mounts were consecutively arranged by pinning them to the inner 

 page of folded sheets of brown paper, and the sheets placed in 

 heavy board portfolios. The portfolios, 12 altogether, are 26 by 

 36 cm. and tied with tape. There are 85 mounts under the genus 

 Ccsoma, of which five are smuts, and some others belong to non- 

 uredinalean species, as stated under the several numbers in the sys- 

 tematic account which follows. There are in addition 6 mounts 

 representing rusts, two under Sphccria, one under Seiridhim^ one 

 under Gymnosporanghim, and two under Podisoina. The whole 

 genus Pucc'mia is unrepresented. 



When the senior author was preparing to make his first visit 

 to the Academy for the purpose of examining some of the types in 

 the Schweinitz collection, he learned from J\Ir. \V. C. Stevenson, 

 Jr. (in letter dated Oct. 19, 1898), a member of the Academy, that 

 part of the mounted collection had disappeared. Few persons 

 had been critically interested in rusts in the recent years, and it 

 was easy to ascertain that none of them had knowledge of the 

 whereabouts of the missing specimens. No one then belonging to 

 the Academy could give any information. It was generally be- 

 lieved that the missing sheets would eventually be found in the 

 herbarium rooms of the Academy. However, a subsequent search 

 failed to bring the missing material to light. The researches of 

 Shear & Stevens regarding the history of the Schweinitz fungi 

 have shown quite conclusively {Mycologia, 9:340. 1917) that the 

 material representing nos. 2905-2946 embracing Puccim'a and some 

 subsequent genera, was mounted by Michener and that the mounted 

 part must have disappeared later. The original packets are still in 

 their envelopes in the portfolios. Fortunately there is some ma- 



