MICHIGAN STATE POilOLOGICAL SOCIETY. 209 



stance during their dormant state through the winter. Upon 

 these mounds the roots were placed and spread out evenly in 

 every direction, first having been cut back to 18 inches ; then 

 soil was sifted on to cover the roots; this done, the hole was 

 filed up even with the surface with the same mixture of soil, 

 muck and manure. When this was done the crown of the vine 

 was three inches from the surface, and the ends of the roots 

 one foot. 



The 350 vines were set in three different plats. One plat of 

 125 vines are on the same slope and adjoining the border 

 already mentioned. This slope is on the east side, and at the 

 base of a hill that rises to an elevation of 254 feet above it. 

 The soil is sand, lime, gravel, and vegetable mould, dry and 

 porous. In this plat are 07 Delawares, 40 lonas, and 18 

 Israellas. Above this plat on the side of the main hill, a spur 

 juts out which is composed of clay, sand, limestone, clay-slate, 

 and lime-gravel, all thoroughly mixed together. This is 

 terraced up in six foot terraces running north and south, slop- 

 ing SDuth on the east end of the spur, except one broad 

 terrace running on the south side of the spur near its upper 

 end. This terrace raises about one foot in ten, running west. 

 Upon these terraces are 104 vines : GO lonas on the lower ones, 

 11 Israellas on the upper one, running north and south, and 

 33 Delawares on the upper broad terrace running east and 

 west. South of this terrace plat, on the main side-hill, and 

 facing directly east, is the third plat, containing 100 Concords 

 and 21 Israellas. The soil on this plat is the same as plat No. 

 1, but the hill is quite steep, raising about one foot in six, and 

 is not terraced. The vines set on the terraces had no manure 

 except swamp muck, mixed with the soil. I have been thus 

 explicit in describing the soil, surface, and elevation, because 

 of the peculiar results which followed. 



All the vines started nicely in the spring, and some on the 

 lower plat had grown two feet by the 6th of June. Then 

 came a frost which cut back every vine on this plat, but did 

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