RErORT OF COMMISSIONERS OF INLAND FISHERIES. 



43 



TABLE No. 3. 

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



Depth of Planting. 



Method of Planting. 



Just covered over. 



Six inches 



Twelve inches. 



Inverted 



Buried flat 



Normal position 



Inverted 



Buried flat 



Normal position. 



Inverted 



Buried flat 



Normal position. 



3 None. 

 1 None. 

 Nunc. 

 8 i None, 

 (i None. 



2 

 37 

 29 

 17 



None. 



3 



None. 



None. 



t"-3" 



l"-3" 

 f'-l"-4" 

 4 "-6 "-7" 

 3 "-5 "-7" 

 l"-3"-5"- 

 10 "-5 "-4" 

 5 "-6 "-9" 

 l"-4"-8" 



2" 

 ■1" 



•11" 

 0" 



5i" 

 4" 

 7" 

 8" 

 6" 



There may have been some other cause of death than their 

 being- buried, but the greater mortality among those which were 

 buried deep and among those which were in an unnatural position' 

 lying flat or with the snouts down, would seem to show that their 

 being buried was the chief cause of death. 



The Enemies of the Clam. — Passing by the arch enemy, man, 

 there are many lesser enemies of the clam — perhaps more 

 than are known at present. The free-swimming spat are doubt- 

 less devoured by most of the animals which, like the oyster, mus- 

 sel, barnacle, and many other species, derive their food from the 

 microscopic forms which swim in the water. After the clam has 

 set, and while it is preparing to burrow, star-fish, mummychogs, 

 ducks, crabs, etc., feed upon it. Even when it has burrowed, it is 

 not secure from its natural enemies. Evidence of the destructive- 

 ness of two of these, the rock-crab, and one of the sea snails 

 {Neverita), has been observed during the past summer. 



