A familiar explanation of the art of assaying gold and silver; and its bearing upon the interests of the public demostrated; with considerations on the importance of the Pix jury; a review of the past and present state of the goldsmiths’ trade; and a table, showing the mixture and sterling value per ounce of every quality of gold that can be alloyed T Technology
The treatment of paper for special purposes; a practical introduction to the preparation of paper products for a great variety of purposes .. T Technology
