Foreign Notices : — Russia. 233 



Species IV. — ikfdrus atropurpurea Roxb. Flor. Ind., vol. 3. p. 595. ; n. 2. of 



our Monograph, plate I. 



1. Morns rubra Lour. Flor. Cochin., 1,2. p. 555. sp. 2. 

 (not of Linnaeus, and without synonymes), edition of 

 Willdenow, pi. 2. p. 679. 

 Species V. — ikfdrus viridis Ham. ined., Comp. angl. des Indes, n. 465. 



(Wallich) ; our Monograph, pi. II., ikforus aloisia Herbar. 

 __ Delessert. 

 Species VI. — ikfdrus laevigata Wallich, ined. Herbar., De Candolle Comp. 



angl. des Indes. Our Monograph, pi. III. 

 Species VII. — ikfdrus cuspidata Wallich, ined. Herb., De Candolle, Comp. 



angl. des Indes., n. 4646. Our Monograph, pi. IV. 

 Species VIII. — ikfdrus mexicana Bentham, Plant. Hartw., p. 71. n. 514. 



Our Monograph, pi. V. 

 Species IX. — ikforus pendulina Endlicher, Prod. Flor. Norfolk., p. 40. n. 84. 



Our Monograph, pi. VI. 

 Species X. — ikfdrus mauritiana Jacq. Icon, rar., vol.3, pi. 617. 



1. ikforus ampalis Poir. 



" Third Section. 

 " Mulberries mentioned by various botanists ; but of which there are no 

 specimens in any of the herbariums I have examined. 



Species XI. — Mdrus celtidifdlia Thunb. et Kunth, Synops. PI. JEg., pi. 1. 



p. 370. vol 1. 



1 . ilfdrus mexicana Benth. ? 

 Species XII. — ikforus corylifdlia Humb. et Kunth, Synops. PI. Mg., pi. 1. 



p. 370. vol. 2. 

 Species XIII. — ikfdrus insularis Sprengel, Syst. Veget., vol. i. p. 492. n. 12. 

 Species XIV. — ikforus tomentdsa Rafinesque, Flor. Ludovisiana, p. 113. 



n. 379. 

 Species XV. — ikforus serrata Roxb. Flor. Ind., vol. 3. p. 599. n. 7. 



" Finally, the other species of mulberries given as new, but not described, 

 are the following : 1. ikforus bifaria Wall. ; 2. ikforus calcar-galli Cuming ; 

 3. ikforus javanica Blum. ; 4. ikforus scandens Wall. ; 5. ikforus Taitdba 

 Arab. V. Steudel Nomencl. Botan. 2 ed. vol. ii. p 161." 



I think that the J'cer Pseiido-Platanus may also produce oil. This 

 year Professor Longoni will make comparative experiments on all the species 

 of Acer. I shall communicate the results to you at the proper time. Further 

 observations on the oil of the Negundo have proved that it has no acidity, as 

 a drop placed upon a plate of brass gave no signs of containing any, while a 

 drop of olive oil corroded it immediately after the first day, and on the third 

 day it was quite green. It is more desiccative than linseed oil, and will there- 

 fore be excellent for painting ; it does not begin to freeze till — 9° of Reaumur 

 [11° Fahr.], an advantage in lighting exteriorly; its specific gravity is 0" 922 ; 

 and finally, when tried with the diagometer, it is an easy conductor of 

 electricity. — Giuseppe Manetti. 



RUSSIA. 



Sudden Death of Trees in Russia. — It is a very common thing in our climate 

 for trees to flourish for a series of years, and then, in one cold winter (say 

 severe), to be destroyed. This was ascribed to the action of the frost upon 

 the stem, the branches, and the root. But, last winter, I lost two cherry 

 trees, and found under the roots of one of them hollows, as if some animal 

 had burrowed under it, and discovered the fibrous roots, as I thought, eaten, or 

 torn away. Yet I have no small animals in my garden. The other cherry 

 tree died also, except one branch on the side where the gardener was forced 

 to work, and of course, tread the ground, close to the tree, both being sur- 

 rounded with bulbous roots. Well acquainted with the irresistible power of 

 frost, which swells the earth, and raises up posts to the surface, small build- 



