ART. XX.--Notice of Minerals from New Holland;

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FOR the minerals of which I propose to offer a brief notice on the present occasion, I am indebted to John Eldridge, Esq., of Yarmouth, Mass., who very liberally permitted me to select them from a collection purchased by him several years since, while on a visit to Calcutta, to which city they had recently been brought as "curiosities," by a person from the coast of New Holland. Their exact locality it is not in the power of Mr. E. to give me, a circumstance to be regretted, as the information would give additional interest to the specimens, by directing future discoverers to the spot where others of still greater interest might probably be met with.