...No. 1. Experiment V. The teeth were engaged half an inch deep ; the point of contact was a quarter of an inch from the ends of the teeth, at the line of centres; the ends of the teeth were one inch from the bottoms of the spaces; the tangent of contact formed an angle...

...line of centres. In a great number of repetitions of this experiment, a slight receding of sector N0. 2 sometimes appeared. EXPERIMENT VI. The teeth were...oftener manifest than the receding. "These experiments," says Mr. Hawkins, "tried with the most scrupulous attention to every circumstance that might affect...

...N0. I. EXPERIMENT V. The teeth were engaged half an inch deep ; the point of contact was a quarter of an inch from the ends of the teeth at the line of centres ; the ends of the teeth were one inch from the bottoms of the spaces ; the tangent of contact formed an angle...