maple, blue ash, elm, oak, hickory, Kentucky coffee tree, buckeye, locust J 

 Wild flowers, such as violets, spring beauty, adder's tongue. Weeds, aJ 

 ragweed, Jamestown weed, bull thistle, sneeze weed. Besides bluegrassj 

 the following grasses are occasionally observed: Elymus, canadensisj 

 virginicus, festuca nutans, agrostis alba. The plot had been a Ken-l 

 tucky bluegrass sod for a number of years, at least as far back as 1886J 

 It was cleared and cultivated many years ago. 



The season was too dry and the stand obtained was not good. No] 

 observations of injuries due to insects or disease. Soil not alkali ; not] 

 irrigated. Geologically the soil rests upon what the Kentucky geologist 

 calls the upper part of the Trenton limestone. These beds are desig- 

 nated Lexington limestone and Flanagan chert by the U. S. Geological! 

 Survey, the Flanagan chert being a very characteristic horizon. The 

 soil is thought to have been formed in place by the disintegration of the 

 limestone above the horizon, more particularly the lower Hudson and 

 the upper layers of the Trenton, the latter being very phosphatic, thus j 

 giving a very high per cent of phosphate in the soil. 



Virginia, Soil No. 27. Native vegetation is bluegrass. Plot had 

 been used many years, but no manure applied for several seasons. Corn ' 

 and beans grown mostly for some years. 



Season very bad and dry. Soil is not alkali ; not irrigated. Geolog- ! 

 ically a limestone-clay soil. 



Arlington, Soil No. 29. This soil is from one of the Department's 

 experimental farms, located at Arlington, Virginia. Previous to its pur- 

 chase for this purpose it was an old field that had been in grass sod for \ 

 some time. The sod had been taken off and used elsewhere previous 

 to this year's work. There is no crop history and no knowledge of the 

 application of fertilizers. 



The season was fair and all the crops started well but made no head- \ 

 way, two of them dying out. The crops were not injured by insects nor 

 disease. Soil is not alkali ; was not irrigated. The soil rests upon a 

 stiff clay subsoil and is all very poor and worked down in this vicinity. ' 



Potomac Flats, Soil No. 31. This is a soil from a second experi- 

 mental farm belonging to the Department and located in the District 

 of Columbia. It is a very unusual soil, being a river deposit to a depth 

 of about 50 feet. The deposit is one of the system of the Potomac flats 

 which has been made artificially. The soil is very light and always 

 moist, being about the river level. All crops grow abundantly on it, 

 and cereals are apt to grow rank and fall down before maturing. This 

 was the case with two of the crops grown on the plot. The other two 

 had to be harvested green to save them. The crops were not injured 

 by insect or disease. The soil is not alkali ; was not irrigated. This 

 was the first year the plot was used, it having been in weeds prior to 

 this time. 



North Carolina, Soil No. 33. Native vegetation is scrub oak and 

 



