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NEW SERIES.] THE SHAPLEY ENGINE. A new portable 'engiEe, which is chimed to poese�s th'e ad vanh ges of cheapness and economy, in addition to those of simplicity and com· pactness, is the subj ect of the annexed illmtrations. The principal features of the in vention, which render it an improvement of val lie, lie mll in 1y in the construction ofdoi:10.1038/scientificamerican11281874-335 fatcat:clec6252c5aerc7npop4ocdp5i