FIG. 62. Box suspended from a raft near a clam flat from 

 May 15 until October 15 of the same year. The long-neck 

 clams shown below had all settled from the swimming con- 

 dition into the sand that it contained during this period. 



FIG. 63. Growth of Mya in two years on i-ioo of an acre of 

 a barren flat. The small pile at the right represents the 

 size and volume of the seed clams planted. The larger 

 pile is eight times the volume of the smaller. Experiments 

 by D. L. Relding, Mass. Fish and Game Com. 



