40 REPORT OF COMMISSIONERS OF INLAND FISHERIES. 
ford, R. L., on August 4, 1899. The largest specimens are, prob- 
ably, about ten weeks old. Photograph life-size. 
10. Specimens selected to represent the average size of the 
clams in a marked area on the shore of Cornelius Island, Wick- 
ford, R. I., on August 29, 1899. The largest specimens are, prob- 
ably, about thirteen weeks old. Photograph life-size. 
11. Specimens selected to represent the average size of the 
clams in a marked area on the shore of Cornelius Island, Wick- 
ford, R. I, on September 7, 1899. The largest specimens are, 
probably, about fourteen weeks old. Photograph life-size. 
12. Specimens selected to represent the average size of the 
clams in a marked area on the shore of Cornelius Island, Wick- 
ford, R. I., on September 30, 1899. The largest specimens are, 
probably, about four months old. Photograph life-size. 
13. Specimens selected to represent the average size of the 
clams in a marked area on the shore of Cornelius Island, Wick- 
ford, R. I., on December 4, 1899. The largest specimens are, 
probably, about six months old. Photograph life-size. 
14. Specimens selected to represent the average size of the 
clams in a marked area on the shore of Cornelius Island, Wick- 
ford, R. I., on December 4, 1899. The largest specimens are, 
probably, about six months old. Photograph life-size. 
15. Specimens selected to represent the average size of clams 
taken on July 7, 1899, from a marked area on Cornelius Island, 
Wickford, R. L., and reared in a sand-box at the house-boat until 
August 8. These specimens are, probably, about ten and a half 
weeks old. Compare with those remaining on the shore until 
August 4. Photograph life-size. 
16. Specimens selected to represent the average size of clams 
taken on July 7, 1899, from a marked area on Cornelius Island, 
Wickford, R. I., and reared in a sand-box at the house-boat until 
August 29. These specimens are, probably, about thirteen weeks 
