Clam Small 257×320 Medium 514×640 Large 822×1024 Download Tiff Original 1927×2400 | (4.4 MB) Description Cross section of the body of a clam, through the heart. Arrows indicate water current through the gills. Keywords anatomy, Bivalves, clam shell, clams, fresh water clam, mussels Galleries Clams and Other Bivalves Source: Buel P. Colton, Zoology: Descriptive and Practical (Boston:D.C. Heath & Co., 1903) 113
