'New York Agricultural Experiment Station. 169 



IV. The disease of Baldwin applies, known in New York as 

 the Baldwin fruit-spot, is characterized by small brown sunken 

 spots which occur on the fruit about the time it is gathered. Un- 

 derneath the spots the tissue is light brown and spongy. Tlio 

 diseased tissue contains no fungus hyphse. In moist chamber the 

 spots do not enlarge and no fungus appears on them. On various 

 culture media the affected tissue produces no growth. The con- 

 clusion is that the disease is not caused by fungi or bacteria. How- 

 ever, the work of other investigators indicates that similar spots 

 on the Baldwin and other varieties may be due to parasitic organ- 

 isms and h'ence the desirability of greater care in the writing of 

 descriptions. 



V. A species of Fusarium has been found producing a serious 

 leaf spot disease of carnations at Syracuse. It occurred upon 

 plants so situated that the direct sunlight could not reach them. 

 The fungus gains entrance through breaks in the epidermis made 

 by rust sori. It is not improbable that it may be identical with 

 the carnation stem-rot Fusarium. 



VI. Chaetomium contortum Pk., a rare fungus hitherto found 

 only on lily bulbs on Long Island, has occurred at Geneva under 

 circumstances which aroused the suspicion that it is parasitic on 

 barley seedlings; but an inoculation experiment showed that it is 

 not parastic. 



I. A BACTERIAL ROT OF ONIONS.^ 



In the autumn of 1898 the report came to the Experiment 

 Station that the onions in Orange Co., N. Y., were rotting badly. 

 Upon investigation it was found that in nearly all of the fields in 

 this great onion gTOwing district there was a considerable amount 

 of rot. In many cases from one-third to one-half of the crop had 

 to be rejected on account of it, and the remainder was not readily 

 salable because news of the rot had reached New York city pro- 



1 This paper was read at the Columbus meeting of the Society for the Pro- 

 motion of Agricultural Science, August 22, 1899, and will subsequently be 

 published in the Proceedings of that Society. 



