THE AMERICAN NATURALIST [Vol. XLVII 



It is seen that plots 1, 3, 4, 5, 7, 8 

 and 11 received the several fertilizing 

 materials singly and in combination 

 in what may be called normal 

 amounts of 12 pounds nitrate of 

 soda, 30 pounds acid phosphate and 

 8 pounds sulphate of potash; plot 9 

 received all these in considerably 

 smaller amounts; while in plot 12 

 an excess of the chemicals was applied 

 together with a liberal quantity of 

 ordinary barnyard manure, the idea 

 being to supply here a maximum of 

 the stimulus that ordinary fertiliz- 

 ing materials may be expected to af- 

 PotashSJbs ford. The lower half of the entire 

 plot was planted to corn and the 

 upper half to beans. These facts 

 are graphically shown in Fig. 1. 

 One half of the nitrate and the entire 

 amounts of the other materials were 

 applied broadcast on June 8 and har- 



The . 



3 f the Red 



14, and the Davis white wax beans 

 Potaahaibs the next day in drills running 

 lengthwise of the area. Both were 

 thinned where necessary to give the 

 corn space of four inches and the 

 beans three inches. The remainder 

 of the nitrate was applied about three 

 weeks after planting, but the exact 

 date can not be given. The plants 

 were cared for in the usual way and 

 the measurements taken from Sep- 

 tember 14 to 16, or possibly a few 

 days later. With the corn a record 

 was made of the following: distance 

 from ground to uppermost ear, dis- 

 tance from ground to lowest branch 

 of tassel, and the number of ears 

 formed. Where ear-bearing suckers 



