195 



the iitti'iiipL to :.lav llic disease will ix- alioiMloiictI, especially 

 when the main line of advance, wliicli is now in iioiilieni .Mary- 

 lan<l, reaches (he i'oioiiiac Jiivei-. i A])i)laiis(i). 



MR. (;AvSSEJJ>, (.(' IMiila.leli.hia : I wish K. say 1o I >i-. Mnn-ili 

 liial, 1 will lie iilad any lime l«» sintw liini trees that have lieeu 

 treate<l foi- two years and are alive to-day and apjiarently (piite 

 Jiealthy. (Applause). 



PROFESSOR STEWAKT: Mr. ("Iiairinan: I wish (o speak 

 of tAVo points nientione(l l>y Trofessor Collins in eoiinecticni with 

 tli<' AVashington experiment. 1 think that he has left the im- 

 pression that those points of inlection discovered after June, 

 1911, could be regarded as in-w infections. \ow. one of them, 

 which we examined, Professor Collins says must have occurred 

 in 1910, and I quite agree with him (lia( i( occurred as early 

 as thai, and perhaps earlier. That certainly cannot lie regarded 

 as a new infection. Another point : Professor Collins states that 

 in those two cases where the trees were cut and the stumps left 

 unbarked, that the disease has not reappeared. Perhai)s he did 

 not put it quite that way; I believe he said, "they are not now in- 

 fected." Now on the 30th of December last, when we examined 

 them (Dr. Metcalf, Prof. Collins and others being present), we 

 found the fungus on the bark of one of those stumps, and also at 

 the base of an adjoining tree, as stated in ray paper. 



MR. I. C. WILLIA.MS: Mr Chairman: I wish to direct the 

 attention of this Conference to the character of some of the 

 scientific investigation that is going on with respect to chestnut 

 blight disease. 1 think we have a right to know what some 

 scientists are doing, what they are saying and what they are at- 

 tempting to do. It is for that purpose, therefore, that I have 

 brought before you a copy of the report of the New York State 

 Museum, and I wish to read you a short paragraph therefrom. 

 On page 7 of that report it is written as folloAvs: 



"^A'hile there (referring to a locality which was visited) 

 my attention was called to a diseased chestnut tree. It 

 was a young tree, with sickly looking foliage and a few dead 

 branches. It was suffering from the chestnut bark disease, 

 caused liy a parasitic bark fungus. Both branches and trunk 

 were affected by the fungus, the latter dead a. few feet above the 



