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or from a single tree, which thus may be brought to yield 

 annually the material for 16 yards of G-ros de Naples." 

 The White Mulberry-tree is of extremely easy growth from 

 cuttings, also readily raised from well-matured seeds. It is 

 usually unisexual, and attains finally a very large size. It 

 can be grown in climes, where no longer Olives will thrive. 

 Spots for Mulberry-culture must not be over-moist, when 

 the leaves are to be utilized for the Bombyx. In 1870, 

 according to the British Trade Journal, the produce of 

 cocoons amounted in Europe to 16,588,000; in Asia to 

 28,112,000; in Africa to 44,000; in the South Sea 

 Islands to 24,000 ; in America to 20,000 ; thus giving 

 a general total of 44,788,000. Superior varieties of Mul- 

 berry can be grafted with ease on ordinary stock. M. Indica 

 L., M. macropJiylla Morett., M. multicaulis Perott., M. 

 Morettiana Jacq., M. CJiinensis BertoL, M. latifolia Poir., 

 M. Italica Poir., M. Japonica Nois., M. Byzantina Sieb., 

 M. nervosa Del., M. pumila Nois., M. tortuosa Audib., as 

 well as the Constantinople Mulberry, are merely forms of 

 M. alba, to which probably also M. Tatarica, L. and M. 

 pdbularia, Jacquem., belong, The variety known as M. 

 Indica produces black fruits. The planting of Mulberry- 

 trees has recently assumed enormous dimensions in Cali- 

 fornia, where in 1870 between seven and eight millions were 

 planted. The process of rearing the silk-insect is simple 

 and involves no laborious exertions. The cocoons, after 

 they have been properly steamed, dried and pressed, find 

 readily purchasers in Europe, the price ranging according 

 to quality from 3s. to 6s. per Ib. The eggs of the Silkworm 

 sell at a price from 16s. to 2 per ounce, and in 1870 Japan 

 had to provide two millions of ounces of Silk-ova for Europe, 

 where the worms had extensively fallen victims to disease. 

 Instances have been recorded in California, where 8 tons of 

 leaves were gathered in the first year from the Mulberry- 

 trees of 1 acre, and 30 tons in the next year. As an example 

 of the profit thus to be realized, a Californian fact may be 

 cited, according to which 700 were the clear gain from 

 3| acres, the working expenses having been 93. The 

 Commissioner of Agriculture of the United States has 



