BIBLIOGRAPHY 139 



Dubois, R. Various papers on pearl formation have appeared in 



the Comp. Rend. Acad. Paris, T. 133 (1901), T. 138 (1904), 



T. 154 (1912). 

 FiLippi, F. de. Suir origine delle perle. tjbersetzt von Klichen- 



meister. Arch.f. Anat. u. Phys. 1856. 



(One of the early interesting papers on the origin of pearls.) 

 Harley. Composition and structure of pearls. Proc. Roy. Soc. 



London. Vols. 43 and 45. 1888 and 1889. 

 Herdmax, W. a. Presidential Addresses to the Linnean Society. 



Proc. Linn. Soc. London, 1905 and other years. 



(Summary of old and new theories of pearl formation and 



also the method of artificial pearl stimulation discovered by 



Linnaeus.) 



Report on the pearl oyster fisheries of Ceylon. Royal 



Society. London, 1903—1906. 



(A report of five volumes on the Pearl banks of Ceylon, 

 and the recommendations of the scientific advisers to the 

 Ceylon Government. An account of pearl formation.) 

 Jameson, H. L. On the Origin of Pearls. Proc. Zool. Soc. 

 London, 1902. 



(An account of the origin of pearls in the edible mussel.) 



Studies on Pearl-oysters and Pearls. Proc. Zool. Soc. 



London, 1912. 



(An account of the structure of the pearls and shell of the 

 oriental pearl oyster.) 

 RuBBEL, A. tJber Perlenbildung u. s. w. bei Margaritana mar- 

 garitifera. Zool. Jahrh. (Anat. Abt), 32. Bd., 1911. 



(A detailed account of some recent work on the formation 

 of pearls in the fresh water i3earl mussel of Europe.) 



