OCR Text |
Show New Illuminator. Pror. Alexander Silverman has Invented In-vented n new Illuminator for the microscope, mi-croscope, whote special advantage Is that It gives a very Mroug light upon the object examined, so that opaque and translucent bodies can he n teadlly Kindled ns Iruiixpareut ones. The top of the object on the side can be seen with nil the variations or Us btirfuce. li Is particularly valuable In testing samples of metals since It show the presence of tdow hole nnd pits nnd much dot it II not hltheito visible. It Is likewise useful to textile tex-tile expei is since It shows tho threads of n fabric from every angle and Is also much appi eclated by bacterlnlo-gists. |