Only one instance of damage due to climatic conditions and none whatsoever from insects and diseases has ever been observed with the parent McKinster tree. Undoubtedly, the city location offers some protection from frost, but may also be detrimental, on occasion, through heat reflected from the many surrounding white-painted buildings. For example, an unseasonable warm spell occurred in Columbus during the latter part of the first week in April of the current year. The heat, lasting for several days, reached a high of 80.4 degrees and, as a result, the McKinster tree started vegetating. Leaf growths of from one-half to one inch had been reached when normal conditions returned. Two weeks later, a cold spell with snow and temperatures of 22 degrees killed the new growth but did not injure the wood. Following this, leafing re-occurred, but at a slower rate and somewhat later than normal. The size ultimately attained by the leaves is about one-half their usual size, and, consequently, the accompanying illustration, taken this summer, does not exhibit the usual luxuriant appearance of the tree. A large part of the bloom was damaged by the cold, hence the tree set a lighter crop of nuts than usual. In connection with early vegetating, it may be remarked that Mr. McKinster, several years ago, presented two small grafted trees of his variety to a relative living in eastern Kentucky. These trees were planted on low ground and were killed the first year by late spring frosts after leafing out twice. Thus it seems evident that the McKinster tree has the fault, common in Carpathians, of leafing out too early and being injured by late spring frosts, especially when planted too far south. Three other trees, grafted by Mr. McKinster and now about four years from the graft, are situated in the countryside several miles south of Columbus, Ohio, where they are doing excellently, having never been damaged. The writer has several three year old McKinster grafts at his property in southeastern Ohio which were deliberately set on stocks located in a bad frost pocket. The grafts, which are adjacent to a woods, have made fair growth each spring but are injured during the summer by an insect laying eggs in the succulent growth. The portion of terminal above the point of sting invariably dies the following winter and has the appearance produced by winter killing. This damage has not been unique with the McKinster, having also occurred with the McDermid, Watt, Burtner, and other Persian varieties growing nearby; some of the latter were killed outright the first winter after grafting.