Bull. U. S. B. F., 1921-22. (Doc. 922.) 



Fig. 227. — Steaming mussels in a process kettle. 



Fig. 22S. — Culling mussels by hand. 



Fig. 229. — Girls shucking steamed mussels which are 

 to be canned or pickled. 



Fig. 230.— Sealing class jars which have been packed 

 with picked mussels. 



