TERMS.

OUR TERMS are CASH ON DELIVERY, except by special agreement.

Orders from parties not known to us must be accompanied by an advance

of at least half the price, or satisfactory City reference.

Goods sent by Express will be C. O. D. Where plates are small they may

be sent by Mail upon receipt of price and postage. Remittances must be

by draft on New-York or P. O. money order, payable to the order of

Photo-Engraving Co., or by registered letter--_not by Checks on Local

Banks_.

We pledge ourselves to meet the reasonable demands of those who employ

us. If, in any case, we cannot do so, we will refund the money advanced.

_SEND STAMP FOR ILLUSTRATED CIRCULAR_.

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 146 / 213 题