Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . h paper collectors and disks oftin-foil. Tlie revolving plates have metal buttons attached to one of theirfaces. These buttons impinge ui)onmetal brushes as the plate is buttons rest on tin-foil cementedto the glass. The fixed plates areplaced as close as possible to the re-volving plates. It is claimed that this machinewill work in all weathers. 1 have notfound this to be strictly fact; al-though it is not as muc
Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . h paper collectors and disks oftin-foil. Tlie revolving plates have metal buttons attached to one of theirfaces. These buttons impinge ui)onmetal brushes as the plate is buttons rest on tin-foil cementedto the glass. The fixed plates areplaced as close as possible to the re-volving plates. It is claimed that this machinewill work in all weathers. 1 have notfound this to be strictly fact; al-though it is not as much attected bydampness as an ordinary This machine is usuallynot encased,—a defect which I haveremedied with satisfactory is lighter and less expensive thantlie improved patterns of the Holtzmodel; but it is far less satisfactorj^in medicine, because it generates amuch smaller quantity of electricityand has less intensity. The sparkelicited may be a moderately long-one (when compared with the radiusof the revolving plates); but it israther a thin spark at best,—thus confirming the view expressed by merespecting the quantity Fig. 169.—An Appauatus for GiineuatingFkictional Electkrityby Sikam. ( by W. Avmstrong). Ihe legs upoawhich the boiler rests are of glass. Thenegative electricity generated by the ma-chine when in action accunmlates iijionthe boiler, and the positive electricity iscollected by thocomb upoa which thesteam-jels are directed. «
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Keywords: ., bookcentury1800, bookdecade1880, bookidlecturesonne, bookyear1888
