211 



Summary. — Of the twelve lots, one-half did best from each 

 treatment. The comparative ratios are 13.46 to 13.6, in favor of 

 deep plantings. In other words, in 565 heads, those from the 

 deep plantings averaged about two ounces per head heavier. 

 270 cabbages gave better results in shallow planting, and 295 

 better in deep planting. The differences is the two cases are so 

 slight as appear to be indifferent. 



INFI^UENCE OF DEPTH OF SOWING UPON SEED 



TESTS. 



Extremes in depth of planting are known to greatly affect 

 germination. The investigation here recorded was undertaken 

 for the purpose of determining if minor variations in depth of 

 planting exert any influence upon results of seed tests. Seventy- 

 two tests were made upon tomatoes, one- half of the seeds in 

 each test being sown one-fourth inch deep, and half one-half 

 inch deep. They were all sown in the house during March 

 and April, in potting soil in 22inch fiats. The figures of 

 these tests are too extended for presentation here. The 

 average total germination from the samples sown one-half inch 

 deep wa:; 87.07%, and from those sown one-fourth inch, 

 86.92%. The difference is only three-twentieths of one per cent. 

 As a rule, plants appeared sooner from the ]/{ inch samples, as 

 might be expected. In some cases, however, the ^ inch samples 

 gave the earliest visible results, probably becau.se the soil, in 

 these instances, was more uniforml}^ moist at the greater depth. 

 The general behavior of .seeds at these depths, as regards rapidity 

 of appearing, is shown in the following test of cauliflower seeds : 



Cauliflower; ThorbuiJi' s Gilt- Edge Snowball. — Thorburn. 



125 seeds in potting soil in 22-inch flat. 

 No. I, }{ inch deep. No. 2, yi. inch deep. 



SOWN APR. 4. 



