Fig. 80. — Type of pen used in determining the rate of growth of the scallop. 

 The sizes ranged from 40 to 400 square feet. The posts were made of 2 by 3 foot 

 joists, fixed in the soil and placed at sufficient intervals to hold the netting firmly 

 in position. Wire netting (IJ^-inch mesh) and old seines of a suitable height were 

 stretched around the posts. 



