1816 



Tressler, Donald K.,and James McW. Lemon. 1951. 



Marine Products of Commerce: Their acquisition, handling, biological aspects 

 and the science and technology of their preparation and preservation. Reinhold 

 Pub. Corp., New York, xiii+782 p. 



Chapter 14. Fish and shellfish as food: 282-306. - Venus mercenaria in Sept. 

 1966 had the following amino acids in proteins of edible portions: Arginine 

 5.27%; histidine 1.45%; lysine 5.40%; tryptophane 1.19%. Clams (species not 

 named) contained vitamins A, B, D and G, protein 9% and fat 1%. Venus 

 mercenaria had 1.37 mg/kg iodine in fresh meats. Chapter 27. The clam 

 industry of the United States: 576-589. - Venus mercenaria was one of 2 

 important species of clam on the Atlantic coast. It is common from Cape Cod 

 to Texas. South of New York it is much more abundant than soft clam. Growth 

 to commercial sizes is decidedly slower than soft clam. Approximate com- 

 position of quahogs: 1) removed from shell - moisture 80.8%; protein (Nx6.25) 

 10.6%; fat 1.1%; carbohydrates 5.2%; mineral matter 2.3%; total nutrients 

 19.2%; 2) in shell - shell 67.5%; moisture 28%; protein 2.1%; fat 0.1%; 

 carbohydrate 1.4%; minerals 0.9%; 3) canned - moisture 82.9%; protein 10.5%; 

 fat 0.8%; carbohydrates 3%; minerals 2.8%. Collection of seed quahogs or spat 

 is much more difficult than for soft clams because small hard clams are never 

 found in such vast quantities. As many as 75 young quahogs/ft^ may be caught 

 in box collectors, the method has not been profitable. Young quahogs 

 (littlenecks) bring high prices, and farming to produce small clams has been 

 suggested, using larger animals as spawners. Hard clam was considered 

 inferior to soft clam, and little attention was given to quahog until 

 beginning of 19th century. The industry did not become important until 20th 

 century, when demand for "littlenecks" began. The industry is located chiefly 

 in Mass., R.I., N.Y., N.C.,and Fla. The species occurs from Mass. to Fla. and 

 in Gulf of Mexico. In the Gulf states they are dug only on the west coast of 

 Fla. Harvesting is by rakes and tongs, and by dredges on private grounds. In 

 deep water a basket rake, with a handle 25 to 65 ft long, is used. It is 

 essentially a summer fishery. The catch is washed, graded, and shipped in 

 barrels or bags. Clams often are bedded on tidal flats to hold for favorable 

 market conditions. Others are held in the water on floats. Chief New England 

 markets are Boston and New York. Quahogs will live out of water much longer 

 than soft clam, thus are better known in the Mississippi valley. Clam chowder 

 for canning usually is prepared from quahogs. Processing techniques are 

 described. Chapter 36. Some problems of the fisheries: 752-765. - Storage is 

 a problem for the clam industries. Clams are seldom frozen for long storage 

 because they become rubbery. - J.L.M. 



1817 



Tressler, D. K., and A. W. Wells. 1924. 



Iodine content of sea foods. U.S. Bu. Fish., Doc. 967. 



Data cited by Vinogradov 1953, abstracted elsewhere in this bibliography. - 

 J.L.M. 



1818 



Triggle, D. J., and C. R. Triggle. 1976. 



Chemical Pharmacology of the Synapse. Academic Press, New York, x+6 54 p. 



The book will serve well as an advanced textbook of neuropharmacology for 

 graduate students and as a reference book for workers in the field. It is 

 pointed out that a variety of fascinating questions remain to be answered. 

 Although the review does not say so specifically, it is probable that studies 

 using preparations of Meraenaria meraenaria tissues and organs are covered. 

 Each chapter has an extensive bibliography - from book review by Richard E. 

 Zigmond, Science 197(4309): 1175-1176. - J.L.M. 



505 



