In volume XIV, page 238, and Vol. XVI, page 132 of the SCIENTIFIC AMERICAN, we published illustrations and descriptions of the above machine and subsequently we saw it at work in this city, and found that the machine, much im- proved in its construction, fully corroborated the favorable opinion we had conceived from an examination of the model. More than sixty bricks per minute can be turned out by this machine, each perfect in form and so well pressed that it may be hacked at once. The clay is used direct from the natural bank, no preparation being required except occasionally the addition of a little water previous to throwing it in the pug-mill. The quality of the bricks is very superior, the faces being smooth, the corners sharp and the sides just rough enough to hold the mortar firmly. The only limitation to the capacity of the machine is that of the attendance necessary to remove the bricks as tliey are made. The simplicity, strength, and durability of the machine, having no parts to get out of order,the rapidity of its operation, and the superiority of its products entitle it to the notice of every builder and brick manufacturer. Over 14,000,000 of bricks were manufactured by these machines in Chicago, alone, the past year. The machine may be seen, for a time, in operation at the rear of 59 Ann street, New York city. Mr. Gard's manufactory is at Nbs. 116, 118, 120, and 122 South Clinton street, Chicago. For the present he may be addressed at the Astor House, New York.