Niagara Falls, N.Y. August 26- Monday. Will spend the day although dark and threatening rain to study the Niagara section as exposed along the line of the Base Route of the N.Y. Central to Lewiston. Lackpoor dolomite. In general this formation at the top consists of thin bedded limestone (weathered surface) without shale partings, ranging in thickness from 2 to 6 inches. About 20 feet or maybe more below the top is a zone of heavy bedded dolomite where the beds average 6 to 18 inches. All of these beds are dark in color - a blue - and in this agree with the Lackpoor as exposed about Hamilton only that here the color is almost black - a blue carbonaceous color - and there is more shale in the partings. As I go on I see that the tendency is for most of the beds to be heavy, with gaps of thinner beds and this is more especially true for the lower portion. There are many cavities that originally were filled with [in the main areas of the lower beds] between [illegible] bedded