WALTER J. SALOMON.
—Shoe and Leather Reporter.
In the principal districts in America, removed from the cities, the price of oak bark is about $4 to $6 per cord or per ton of 2,240 lb. The hemlock bark, which gives a sole leather just as thoroughly tanned, but of a darker and reddish color, costs the larger tanners from $3 to $4 a cord.
AN APPARATUS FOR HEATING SUBSTANCES IN GLASS TUBES UNDER PRESSURE.[1]
By H. PEMBERTON, Jr.
Chemists who do not happen to have in their laboratories oil or air baths for heating closed tubes can make an air bath at short notice from materials furnished by all dealers in steam fittings.
Order: