172 mi; CALIFORNIA 



of all, the black. In Malta, the white mulberry grows 

 much more rapidly than in Italy ; but, in India, where 

 the mulberry tree is an evergreen, its growth issorajiid 

 that large quantities are sown and mown in the same 

 season, and from these, sprouts are again produced for 

 a second brood of silkworms. Varieties are known in 

 silk countries which are produced from the white mul- 

 berry, and are only to be extended by layers or cut- 

 tings. 



The bark, according to Rosier, may be converted into 

 linen of the fineness of silk. For this purpose, the young 

 wood is gathered in autumn, during the ascent of the 

 second sap, and immersed for three or four days in still 

 water ; it is then taken out at sunset, spread on the 

 grass, and returned to the water at sunrise ; and this 

 being daily repeated, it is finally prepared and spun like 

 flax. 



By a letter that I have received lately from one of 

 the great silk growers in France, I see that the white 

 mulberry continues to have the preference over all other 

 varieties, and is now extensively cultivated there. 



Third, MORUS MORETTI. This new and valuable variety 

 of mulberry was first discovered about the year 1815, 

 by Mr. Moretti, Professor in the University of Pa via ; 

 and from a single young tree, he had, in 1826, multi- 

 plied them to 120,000. The leaf is ovate, sharp pointed, 

 entire, cordate at the base ; it is thin, smooth on the 

 under and especially on the upper surface, which is of 

 a beautiful and rather deep shining green ; it is not so 

 thick as that of the large white mulberry, called, in 



