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Books Books 1 - 3 of 3 on It is necessary also that the force applied in this experiment be always the least....  
" It is necessary also that the force applied in this experiment be always the least possible. "Every person, however little accustomed, will experience a very marked difference, if comparatively trying in this way any two subsequent members of the above... "
A System of Crystallography,: With Its Application to Mineralogy - Page 96
by John Joseph Griffin - 1841 - 489 pages
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Treatise on Mineralogy: Or, The Natural History of the Mineral Kingdom, Volume 1

Friedrich Mohs - Mineralogy - 1825
...face. It is necessary also that tlic force applied in this experiment, be always the. least possihlc. Every person, however little accustomed, will experience...perceptions more delicate and perfect, so that in a short time it is possible to determine differences in the hardness very much less than those between two...
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Treatise on mineralogy, or The natural history of the mineral ..., Volume 1

Friedrich Mohs - 1825
...face. It is necessary also that the foree applied in this experiment > be ahvuys the Jeast possible. Every person, however little accustomed, will experience...hardness will be easily perceived. A short practice is suflioient for rendering these perceptions more delicate and perfect, so that in a short time it is...
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A Treatise on Mineralogy, Issue 1

Charles Upham Shepard - Mineralogy - 1852 - 245 pages
...face. It is necessary also, that the force applied in this experiment be always the least possible. Every person, however little accustomed, will experience...difference in their hardness will be easily perceived. A little practice is sufficient for rendering these perceptions more delicate and perfect ; so that in...
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