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Studies of Crystalline Vitamin B

VI. The Effect of Graduated Doses on Pigeons

Three Figures

Department of Physiological Chemistry, Teachers College, Columbia University

1. The minimum dose of vitamin B hydrochloride which cures polyneuritis in pigeons is approximately 4 .

2. Increasing amounts of B lead to higher weight levels in previously depleted pigeons up to 80 per day, but even 160 is inadequate to bring the birds back to normal weight.

3. The significance of the results in relation to ‘vitamin B₃’ is discussed.