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The author was closely associated with Sir Victor Horsley in student life and later days. They roomed together for a time and traveled through Italy together. They helped each other in research work, each apparently inspiring the other. Horsley once asked Bond to state in writing his "own conception, not any one else's, of the nature of the soul." During a period of ill health, Horsley sent Bond a letter enclosing a beautifully made trephine about 4 mm. in diameter, suitable for trephining the skull of a frog. On his next vacation Bond, with the help of this instrument, removed both cerebral lobes from a toad. The animal recovered and could still catch worms and flies, but he had lost the instinctive habit of digging himself into loose ground at the approach of winter. The normal toad does this by an outward shoveling movement of the flexed hind legs, by
Recollections of Student Life and Later Days. JAMA. 1939;113(5):445. doi:10.1001/jama.1939.02800300075030
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