38 TEACHING SCIENCE IN THE ELEMENTARY SCHOOL

 Florida. Because of the numerous species of fish to be
 found in this current, it becomes a paradise for both
 sport and commercial fishermen attracting many win-
 ter tourists. The stream of deep blue water originates
 in the Atlantic near the equator and flows northward,
 then divides with part of it entering the Gulf of Mex-
 ico. It is known as the Gulf Stream when it renters
 the Atlantic and moves northward along the east coast.
 Interesting characteristics of this stream and descrip-
 tions of the contrasting life found in it and in the ad-
 joining cooler water of the ocean are attractively illu-
 strated and related in The Gulf Stream by Ruth
 Brindze.

 (28) 6-I. Florida as a Poultry State
 Some of the economic and natural advantages neces-
 sary in developing a great poultry industry found in
 Florida, are a mild, even climate, plenty of green feed,
 lots of sunshine, and a good market. There is no
 branch of agriculture practiced more widely on Florida
 farms than is poultry-keeping, for it is estimated that
 some kind of poultry is kept on sixty-five out of every
 hundred farms. Poultry is in fifth rank as an agri-
 culture enterprise in the state.

 (29) 5-IV. Florida Birds
 In Florida, where there is probably a larger number
 of birds in greater profusion of varieties than any-
 where in the United States, a study of birds would be
 most valuable. Children are interested in birds for
 their attractive colors, appealing songs, and power to
 fly. At the same time they realize that Florida's bird-
 life is economically important (1) because the birds
 destroy insects harmful to agriculture, (2) because of
 the use made of domesticated birds, as chickens, ducks,
 and geese, (3) because of the part they play in the
 distribution of seeds. For further information see the
 Department of Agriculture bulletin, "Birds in Florida."

 (30) 6-II. Naval Stores
 At one time naval stores were the "pitch, tar, and
 rosin" for the wooden ship industry. Now the use for
 boat building is not so important as the use in the
 manufacture of soaps, polishes, paints, lacquers, inks,
 linoleum, roofing, pharmaceuticals, plastics, and many
 other things. Improvements on the old operation of