Agricultural news . ids and fibre,fat, protein, mineral substances (such as iron, calcium,phosphorus and others), and also certain substancesnecessaiy for growth and health, which have only re-cently been discovered, and to which the names vita-mines and hormones have been applied. The bulletin points out that peas, beans, andsimilar legumes are most useful in reducing the quan-tity of meat required in a well balanced ration: thatsweet potatoes and similar vegetables are wholesomesubstitutes for bread, while all fruits and greens, andsucculent vegetables supply the diet with mineralsubstances
Agricultural news . ids and fibre,fat, protein, mineral substances (such as iron, calcium,phosphorus and others), and also certain substancesnecessaiy for growth and health, which have only re-cently been discovered, and to which the names vita-mines and hormones have been applied. The bulletin points out that peas, beans, andsimilar legumes are most useful in reducing the quan-tity of meat required in a well balanced ration: thatsweet potatoes and similar vegetables are wholesomesubstitutes for bread, while all fruits and greens, andsucculent vegetables supply the diet with mineralsubstances and the vitamines essential to health whichare present in them. If used intelligently, such a dietconsisting chiefly of vegetables, will not lack starch orprotein. In connexion with these foods, however, it ishighlv desirable to, use skim milk, which like freshfruits and vegetables, is perishable and can only beprofitablv u?ed within a short period after its prryjijc-tion. 394 THE AGRICULTURAL NEWS Decembee 15, 1917. INSECT NOTES. THE MELON FLY IN HAWAII. From time to time within recent years articles haveappeared in this column of the Afiricultural News dealingwith fruit flies. Some of these articles were devotedentirely to the Mediterranean fruit fiy, as bein j perhaps themost important of this group of pests. Another member ofthis group, however, has been attracting considerable atten-tion in various parts of the world, mainly in the East. Theinsect in question is the melon fly (Bactrocera rucur/dtae,Coq.), which has been recorded from India, Ceylon, Java,Timor, Northern Australia, Singapore, the Philippine China, Japan, and the Hawaiian Islands. It is inthe last named country that the melon fly has assumed thegreatest importance, and a brief account of this insect, as itoccurs in Hawaii, is taken from Bulletin Jfil of the UnitedStates Department of Agriculture by E. A. Back and C. , who have done much valuable work in fruit flyinvestigations in H
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