SULPHURIC ETHER, OR ETHER 345–371 History and composition 345 Chemical and physical properties 345–9 Physiological effects 349–55 Administration of ether 356–61 Great safety of 362–9 The combination of chloroform and ether 369–71 AMYLENE 372–410 Preparation and properties 372–7 Physiological effects 378–86 Use in surgical operations 386–94 Use in parturition 394–7 Its effects 397–419 THE MONOCHLORURRETTED CHLORIDE OF ETHYLE 420–23 ILLUSTRATIONS. Chloroform inhaler 82 Ether inhaler 349 THE LIFE OF JOHN SNOW, M.D. There is not much credit in the mere acts of living and dying; in being driven by unavoidable fate through the common journey, with shoulders uncovered and the whip over them; in doing nothing save the drudgery of existence; in enjoying, in an approach to the recognition of enjoyment, the brief dreams of childhood; in struggling into manhood; in battling through the after-strife obedient to the castigator behind; and in dying at last, as though life had never been; dead to-day, wept for tomorrow, and forgotten by the morrow’s succeeding sun. There is not much credit in this surely, for credit must be earned by something done beyond that which all must perforce do. But, in the face of all the struggles incidental to the existence, so to have managed as to have stolen out of time hours which other men knew not in their calendar—so to have defied the inexorable taskmaster as to perform more than is included in his demands; so to have willed and acted as to live on when death has done his worst; to assist all coming wayfarers in their conflict wherever they may meet it; to prove that there is something more in life than labour lost, and nothing more in death than an idea—_Hoc opus hic labor est_—in this there is achieved the grand attainment; the perpetual life.