Mackenzie's Five Thousand Receipts in All the Useful and Domestic Arts

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The assay of tin ores in the liquid way was looked upon as impracticable, till Bergmann densed the following method, which is generally successful Let the tin ore be well separated from its stony matrix, b well wash...