Shell-fish industries . Fig. 62. Box suspended from a raft near a clam flat fromMay 15 until October 15 of the same year. The long-neckclams shown below had all settled from the swimming con-dition into the sand that it contained during this FlG. 63. Growth of Mya in two years on 1-100 of an acre ofa barren Hat. The small pile at the right represents thesize and volume of the seed clams planted. The largerpile is eight times the volume of the smaller. Experimentsby IX L. Belding, Ma—. Fish and (lame Com. The Growth of the Soft Clam 313 covered with stagnant water, until, after many cl
Shell-fish industries . Fig. 62. Box suspended from a raft near a clam flat fromMay 15 until October 15 of the same year. The long-neckclams shown below had all settled from the swimming con-dition into the sand that it contained during this FlG. 63. Growth of Mya in two years on 1-100 of an acre ofa barren Hat. The small pile at the right represents thesize and volume of the seed clams planted. The largerpile is eight times the volume of the smaller. Experimentsby IX L. Belding, Ma—. Fish and (lame Com. The Growth of the Soft Clam 313 covered with stagnant water, until, after many clays, ascum of bacteria had formed over them. Seed forplanting could be kept in good condition out of water forseveral days in a comparatively low temperature. Great numbers of soft clams have been dug from local-ities where the water contained very little salt, andplanted where the salinity was very high, apparently be-ing not at all affected by the transfer. Great changes insalinity have a markedly bad effect on oysters, interfer-ing especially with reproduction; but soft clams breedwell in either extreme. This condition, that requires somuch attention from the oysterman, may probably beentirely disregarded by the clam culturist. No rule c
Size: 1929px × 1295px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
