hine. Special- 33,000 SOLD. No Engineer. TRADES UNIONS, THE TENDENCY ly adapted for use OTTO GAS ENGINE WORKS, PHILADELPHIA. of.—By Herbert Spencer. An abie paper, pointing out in private corre- the x,reut difficulties of dealing with complex social spondence. Sent This attractive little book, of… … SHIPMAN ENCINE COMPANY, States.—A full account of the operations in the produc- BSRLINW BLVs tion of rain recently carried out under Federal appro- priations in Texas. One illustration. Artificial rain VITRIFIED BRIGK. making. By Prof. EK. J. Houston. Contained in SCIEN- TIFIC AMERICAN SUPPLEMENT,…
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