172 



Stereum hirsutum (VVilld.) Fr. Putnam, 10, 1893; 12, 1894. 



Siereum ochraceojlavum Schw. Vigo, 10, 1893. 



Thelephora iephroleuca B. & C. Putnam, 7, 1894 (Melia Ellis). 



AfiARICACE.E. 



Collybia zonula Pk. At the foot of a maple, Putnam, 8, 1896. 



LYCOPERDACE.E. 



Geuster Jimhriutiirn Fr. Putnam, 11, 1894. 



Lemanea catenulata grows in abundance, forming fringes on the rocks above 

 the upper fall (Eel River Falls, Owen County), where I collected it in May, 1893. 

 According to Dr. Atkinson this species has not before been leported from America. 

 Its Chantransia stage is still a desideratum. The plant was distributid in Setchell, 

 Holden and Collins: Pliycotheca Americana. 



Additional Hosts for Indiana fungi previously reported. 



Carex Pennsylranica (Puccinia caricis). Montgomery, 5, 1895 (Olive). 



Galium aparine (Puccinia galii). Montgomery, 5, 1895 (Olive). 



Ipoiiiiia nil {Albugo iponna-panduriniy). Tippecanoe, 9, 1895 (.\rthur). 



Phaneolus diversi/olius ( Uromyces appfndiculatiit;''. Tippecanoe, 9, 1895 ( Arthur'. 



Columbia University, 2(5 December, 1896. 



Changes in the Pith Cell Preliminary to the Development of Cavities 

 IN the Stems of Some Grasses. By George J. Pierce. 



The Bacteriological Flora of the Air in Stables. By A. W. Bittinc; 



AND Chas. E. Davis. 



During the tirst five months of the present year a study was conducted to 

 determine the number of bacteria found in the air in stables and to determine 

 whether a relationship existed between the number of germs found in the air and 

 the sanitary condition of the place. 



Ten barns and stables were selected, representing fairly well good, average 

 and poor sanitary conditions. Fifteen tests of the air were made inside the build- 

 ings with Hesse's apparatus and a corresponding number of tests made on the 

 open air at the same time. The average number of colonies developed per liter 

 from the air inside the stables was 86; the average number of colonies developed 

 per liter from the air outside the stables was 27. Thirty tests were made by Petri 

 dish exposures for two minutes each in the air inside the stables and fifteen tests 



