18 



COrMEECIAL FISHERIES RSVTEW 



Vol. 13, Ko. 7 



Twelve stations have been established in various ranges of salinities through- 

 out Chesapeake Bay. A monthly collecting panel is made up of 12 boards and a con- 

 trol supported on a metal bar and suspended vertically in the water. They are tag- 

 ged with metal numbered tags as they are removed from the water each month. Each 

 month one board and the control board is removed, and during each following month 

 consecutive boards are removed and replaced. In this way the rate of giTowth of 

 borers over a given period can be obtained from boards removed each month. 3y re- 

 moving the control board each month, information on the breeding season can be ob- 

 tained. 



Dr. Truit recently pointed out that despite its abundance and extreme des- 

 tructive nature, "ship worms and their activities are little known. Our work may 

 provide a key to the ultimate control of this pest." 



U. S. Pack of Canned Clams and Clam Products, 1950 



Canned clams and clam products packed in the United States during 1950 amounted 

 to 1,518,719 standard cases, valued at $10,839,889 to the canners (table 1). This 

 was an increase of 332,659 standard cases and $2,060,871 as coii5)ared with the pre- 

 vious year's production. 



Compared with 1949, the 1950 pack of whole and minced clams was 50 percent . 

 greater; and the chowder, juice, broth and nectar production increased by 21 per- 

 cent. 



The canned whole and minced clam over-all standard case average price drop- 

 ped from $10.75 per case in 1949 to $9.81 in 1950. Individual price advances were 

 noted for razor clams in the states of Washington and Oregon, but the price of 

 canned soft and hard clams in the ingjortant producing regions of I-faine and other 

 New England and Middle Atlantic States in 1950 dropped. 



Average standard case prices for canned clam chowder, juice, broth, andnectar 

 during 1950 were slightly lower than in 1949. 



