420 Cincinnati Horticultural Society — Proceedings. [September, 



the experinipnt had caused a large crop of fruit. He wished to know what time 

 of the year was the best for this operation. 



Mr. EaNST and Mr. Kelly thought July was the proper month. 



On motion, the subject was referred to a committee consisting of Messrs. Kellt, 

 Sayres and McWilliams. 



Mr. Ernst, the President of that Society, announced that the Ohio Poraological 

 Society would meet in this city next fall ; and, on motion of Mr. Foote, this 

 Society tendered to that Association the use of its rooms and of its hall, on the 

 fair grounds, at the fall exhibition. 



Mr. Kelly exhibited to the Society a branch of a pear-tree that had been killed 

 by the fire-blight. He said lie had trimmed the tree in the spring and it was 

 healthy until about two weeks since ; that Mr. Ward had examined the branch 

 with great care with a powerful microscope and had not been able to detect any 

 puncture, eggs or other traces of insects, neither had he been able to discoverany 

 fundus on it. That he wished particularly to call the attention of the Society to 

 the fact that this branch was perfectly healthy and vigorous until the time he 

 mentioned, so as to prove the incorrectness of the theory that it was occasioned 

 by the frost of winter. He thought that it was produced suddenly by atmos 

 pheric influences and commeHccd on the outside of the tree ; that the blight fre- 

 quently, as in the specimen presented, struck the middle of the branch and 

 spread both ways; whereas trees killed by severe wnter are destroyed from the 

 extreme end of the limbs. 



Mr. Ernst thought the fire-blight caused by severe winters and sometimes by 

 the sun. He said that when the wood of the tree had not matured in the fall, or 

 ■when it had grown very rapidly in a wet spring which was followed by a dry, 

 hot summer, it was much more likely to make its appearance. He agreed with 

 Mr. Kelly that it was not occasioued by insects — that that theory had been aban- 

 doned by its former advocates. 



Mr. Kelly, Mr. Sayres and Dr. Mozike thought that Mr. Ernst's theory was 

 inconsistent with facts. 



Dr. MoziER said that these same theories had been discussed in this Society 

 four years since and until a much larger collection of facts had been gathered, it 

 was impossible to say we knew anything of its cause; and, on his motion, the 

 subject was dropped. 



Mr. Ward suggested, for the investigation of members, three questions : — 

 Whether the mildew is fatal to the grape ? Whether it is found on the vine ? and 

 whether it is found on the root ? 



On motion, these queries were made the subject for discussion on next Saturday. 



Mr. Ward suggested that the mildew might be one of the effects, or an indica- 

 tion only, of the disturbing cause. 



Dr. Sturm exhibited the Kohlrabi Turnip Cabbage. 



E. J. Hooper exhibited White Juneating Apple. 



Mr. McWilliams exhibited Early Charraontelle and Madeleine Pears, Princes' 

 Early Harvest and Early Chandler and Yellow Juneating (?) Apple. 



J. D. C. Stark exhibited Huuton Seedling Gooseberry. 



William Evans, of Pleasant Ridge, exhibited the Warrior, Roaring Lion, North- 

 ern Hepo, SL-iuglitenuan, Edward's Jolly Tar, Red Ocean, Houghton Seedling, 

 Cheworth's White Lion, Berry's Greenwood, Brotherton's Pastime, Cook's Earle, 

 Shaw's Billy, Samson's Queen Anne and Northern Hero Gooseberries. 



