The next class of instruments to be considered are seismometers or earthquake measurers, and seismographs or instruments which Se give diagrams of earthquake motion.
These officers always include three selectmen, a clerk, a treasurer and one or more auditors, and they may include any or all of the following: assessors, who together with the selectmen constitute a board for the assessment of taxes, one or more collectors of taxes, overseers of the poor, constables, surveyors of highways, fence-viewers, sealers of weights and measures, measurers of wood and bark, surveyors of lumber, cullers of staves, a chief fireward or engineer and one or more assistants, a clerk of the market and a pound keeper.
The objections raised were (i) the costliness of the instruments employed and their liability to get out of order; (2) the need for specially instructed measurers, men of superior education; (3) the errors that frequently crept in when carrying out the processes and were all but irremediable.
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