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be cultivated with success. This is equally the case with the 

 Orange. Thus, the finest in Jamaica are raised on the 

 white limestone of the Pai'ish of St. John, and in no part 

 of the world are sweet Oranges produced in such abundance 

 as in Manchester. The rocks which compose the south-west 

 boundary of Blue Mountain Valley are of the same forma- 

 tion ; and it is remarked of an estate in that district, that the 

 seeds of Oranges, sown by the negroes there, turn out uni- 

 formly sweet. On the contrary, in the neighbourhood of 

 Bath, where rocks of the trap and secondary formation 

 prevail, all the Oranges have more or less of acridity. 



These facts lead us to the following conclusions: — 1st, 

 That the sweet and the bitter Oranges are the same species, 

 the former, in unfavourable situations, degenerating into the 

 latter. 2dly, That the difference between these varieties has 

 not originally existed, but that the conversion of the bitter 

 into the sweet Orange has been the effect of circumstances 

 extremely propitious, combined with care and cultivation. 



Uses. The sweet Orange is principally used for the 

 dessert. The bitter variety is capable, by preparation, of 

 forming a variety of agreeable confections. The rind pos- 

 sesses a higher degree of aroma than that of any other of 

 the genus, and the pulp is used to diminish the tendency to 

 putrefaction. The most valuable part, however, is the flower, 

 from which a distilled water is obtained. * 



7. C. decumana, {the Shaddock.) Leaves oval, rounded at 

 the apex, sub-emarginate, crenated, beneath pubescent. 

 Petioles alate. Stamens 30. Fruit very large, with the rind 

 thick. 



This is a tree about 18 feet in height, the crown flat, the 

 branches divaricating. Branchlets compressed, angular, when 

 young pubescent. Leaves 5 inches long and 2^ broad, oval, 



* We have to regret that the Orange is not here an object of more general 

 cultivation. In the Floridas, it has become so profitable that, according to 

 an American writer, one acre yields 1000 dollars per annum. 



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