Fig. 83. — The Spawning Months. — The spawning season lasts from the 

 second week in June to the middle of August. This period is represented by the 

 shaded portion. 



Fig. 84. — The Growing Months. — The scallop increases in size of shell 

 only during the summer months, as during the winter growth ceases. The shaded 

 portion represents the period of growth. 



Fig. 85. — The Relative Value of the Growing Months. — The scallop 

 does not increase with equal rapidity during the seven months of growth. The 

 relative value of these months is graphically represented in terms of the increase 

 in volume during each month for a standard scallop. The slow growth during 

 June and July, as represented by the short columns, roughly corresponds to the 

 spawning season, and the decrease in growth is probably due to that cause. 



