Excerpt from Annual Report of the Curator of the Museum of Comparative Zoölogy at Harvard College, to the President and Fellows of Harvard College, for 1890-91

During the year a course of lectures was given on Mineral Veins and Metalliferous Deposits, with special reference to the mode of occurrence and utilization of the useful metals and their ores, the course forming an introduction to the sciences of Mining and Metallurgy. This course was attended by about twenty students, mostly Seniors, with a few Graduates.

The slides belonging to the lithological collections, mentioned in the last Report as having been transferred to the keeping of the Instructor in Petrography in the College (dr. Wolff), still remain in the hands of Professor Wadsworth, Director of the Michigan Mining School, and no recent information has been received from him in regard to the preparation of the report intended as the continuation of the Lithological Studies, of which the first part was published in the Museum Memoirs several years ago. These slides would be useful, as a necessary complement of the collection to which they belong, for the Instructor in Petrography, and should be returned unless Professor Wadsworth finds himself able within a reasonable time to prepare a report on the same.

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