The practical miners' own book and guide, comprising a set of trigonometrical tables, adapted to all purposes of mining surveying; also, a treatise on the art and practice of assaying silver, copper, lead and tin, with tables which exhibit at one view the value of assayed ores. Rules for calculating the power of steam and water engines; together with a collection of essential tables, rules and illustrations exclusively applicable to mining business. Also, some plain and practical remarks on the ventilation of mines, with some remarks upon the middle division eastern Virginia coal fields. The whole introduced and exemplified in the most plain and practical manner