Clam Growth.—This photograph gives a comparison between the growth of small and large clams from a single bed under the same natural conditions. The large clam shows a much slower growth than the small. Both clams were notched when planted on the "Spit" in Essex River, April 18, 1907. They were dug Aug. 28, 1907.
Soft-shelled Clam (Mya arenaria).—This large clam shell, measuring 5¾ inches in length, was found on Grey's Flat, Kingston. Where the flat has been worn away by erosion the ground is white with thousands of these shells in an upright position in the soil, showing that sudden destruction had overtaken them at some time in the past.
Quahaugs from an Experimental Bed at Monomoy Point, showing Two Years' Growth.—The two notches or file marks on the shells indicate the growth per year. The photograph is two-thirds life size. These quahaugs have shown rapid growth, having gained nearly 1 inch a year in length, which is the best growth thus far found in any of the experimental beds.
