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Improvements in the method of preparing spheroidal specimens, in the suspension of the pendulum, in the method of measuring its displacement, and in correcting for the field gradient due to the magnetizing solenoid are reported. New means for protecting small specimens from atmospheric action without rigid constraint and up to the softening temperatures of Pyrex glass (or of fused silica) are described.
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McKeehan et al. (1936) studied this question.
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