REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



53 



When clams are planted and covered with soil, instead of 

 being sowed on tjie surface, they should, if possible, be placed 

 in the natural position, head down; otherwise they" find difficulty 

 in adjusting themselves, and often even work their way to the 

 surface and burrow again. They should not be planted too deep, for 

 with a considerable depth of soil over them they are apt to smother 

 before they can adjust themselves and reach the surface with their 

 siphons. 



An experiment was made in 1902 with three hundred selected 

 clams, one and one-quarter inches in length, for the purpose of dem- 

 onstrating the effect of planting in different positions and in various 

 depths of soil; and although the experiment was on a small scale, 

 the results indicated clearly the advantage of planting in normal 

 position and not too deep. 



Depth as a Factor in Planting. — Results Four Days After. 



The ideal method of planting in case of the larger clams, one and 

 one-half inches long and upwards, is to place the clam head down 

 in a hole made in the firm soil and to cover with an inch or two of 

 loose soil. This, of course, is a rather tedious method for use on 



