BULLETIN OF THE BUSSEY INSTITUTION. 257 
table were mixed with the green sand; two buckwheat seeds were 
planted, February 13, 1873, in each jar; and the entire series was 
watered with rain-water until the crops were harvested. The following 
results were obtained : — 
The Crops, harvested April 29, 1873, 
The jar contained 1210 ; 
No. of grms. of the green 
theJar.) Sand, plus — Peek eo Grew toheight | Had Pamarks 
to 100° ©.) in inches. Seeds. 7 
i | a | | 
I | 0.1 grm. of Nitrate 
of Ammonia. .| . 147 . |} G44 tl 1 
II | 0.1 grm. of Nitrate 
of Ammonia and 
0.5 grm. of Chlo- 
rideof Potassium| . 0.24 . |. ..10. 0 | Only 1 plant. 
III | 0.1 grm. of Nitrate 
of Ammonia and 
0.5 grm. of Phos- 
phate of Soda .| - 140 . |. . .17 ..{ 11 | Only 1 plant. 
IV | 0.1 grm. of Nitrate 
.of Ammonia and 
0.5 grm. of Phos- 
phate of Lime .| . 1.83 } ites 7 
Vem... ..| -: 0.04 ; Bae 0° 
~V1I {0.5 grm. of Chlo- ey 
ride of Potassium| . 0.04 i {e's rf 0 
VII | 0.5 grm. of Phos- Seay 
phate of Soda .| . 0.05 . |} j= 8 t| 0 
VIII | 0.5 grm. of Phos- Test 6 
«| phate of Lime .| . oo4°. |} 7= 2 t] 0 
IX | 0.25 grm. of Nitrate 1=16 
Or nods. . . J]. 1.96 Te 9 
The results obtained in this series of experiments are not quite so 
high as those reported on page 64, because the method of mixture here 
used is inferior to the method of, watering with saline solutions that 
was employed in the othet case. The experiments tend to show that 
the nitrates of soda and of lime are useful additions to the green sand. 
They probably liberate some’of its potash, besides supplying nitrogen. 
Growth of Buckwheat in Mixtures of Peat or Loam and Berkshire 
Sand.— The following experiments were made in the winter of 1873— 
74. Three seeds were sown upon the same day, — November 25, 1873, 
VOL. I. ' $3 
