Powf.m. — On Pertvsftis. 231 Thirdly the exj)ert should be examined by the court and crossed examined by counsel on both sides, within discretion of the court. And fourthly he should be permitted to estimate the value of evidence, comprehended within his special department, and to reject from consideration that which is essentially false. This latter privilege is now forbidden to the expert who is alone capable of exercising it, and assigned to the juryman who is, generally, especially incapable. Lastly the expert in criminal, as in civil, cases should be compensated for his services. It is surely a hardship endured by no other class of men, to be required, at the demand of any attorney who may feel the need of his brains to assist him in building up his own reputation, or any criminal to save his neck from the well merited halter, to give his time, his knowledge, his private property without just compen- sation, in contravention to the expressed provisions of common law and common justice. No. lf*3 State street, March 17, 18To.
Art. V.—A CONTRIBUTION TO THE PATHOLOGY AND THERAPEUTICS OF PERTUSSIS.*
By Seneca D. Powell, M.D., of New York City.
AT a meeting of the Northwestern Medical and Surgical Society, on March 17, 1875, I called attention to three of the cases I wish to read to you this evening, and again, on November 17, lS7. r >, I reported to the Society two other cases. ('ask 1. — November S, 1874, IS. L., aged (I years, while playing in the street, was run over by a wagon and suffered fracture of the lower third of the humerus. On exanuning ♦Repeated, by request, before tbe New York Neurological Society, March ft, IH7(J.
