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NTHLY REVIEW OF "NATURAL SCIENCE. 
EDITED BY JOHN H. COOKE, B.Sc.,' F.G.S. 
Assisted hy A. CARDAN A OATTO, B.A., LL.D., 
Member of the Botanical Society of Italy. 
Yol. II, No. 18. MALTA, NOVEMBER 1st. 1892. 
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