Statistics for occurrence #1 of “Dr. Mathias Mayor” in chapter 2 of Elizabeth Cary Agassiz, Louis Agassiz: his life and correspondence, third edition:

...y an interesting teacher, but a friend who sympathized with his favorite tastes, possessed the only collection of Natural History in the Canton de Vaud. To this Agassiz now had access. His uncle, Dr. Mathias Mayor , his mother's brother and a physician of note in Lausanne, whose opinion had great weight with M. and Mme. Agassiz, was also attracted by the boy's intelligent interest in anatomy and kindred subject...
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