Abstract: An apparatus for automatic quantitative analysis of specimens of a blood serum by a cataphoretic process comprises a supply of a clearing liquid which is supplied to a film on which a plurality of specimens are disposed at a constant pitch, light source means for projecting light onto the film which has been made clear by the application of the clearing liquid thereto, measuring means including a photoelectric transducer element which receives and determines the light which has transmitted through the film, feed means for intermittently feeding the film so as to locate it at a measuring port which is positioned between the light source means and the photoelectric transducer element, and scan drive means for displacing the light source means and the photoelectric transducer means crosswise of the film to scan a particular one of the specimens which is positioned at the measuring port each time the film comes to a stop.

Abstract: An apparatus for adjusting the light source position of a light source assembly comprises a lamp socket for mounting a lamp at an eccentric position thereon, and a sleeve secured to a lamp housing for mounting the lamp socket so as to be slidable along the axis and rotatable about the axis of the sleeve. By axially sliding the lamp socket relative to the sleeve or by rotating the lamp socket about the axis, the position of the lamp can be optimally adjusted relative to a condenser which is mounted on the lamp housing.

Abstract: A lamp socket arranged to facilitate inserting of base pins of a lamp and to securely hold said pins after inserting by providing fixing members having holes for inserting said base pins and pushing members for fixing said base pins.

Abstract: An arrangement for detachably mounting an examining member onto a microscope comprises a horizontally extending dovetail key on the examining member, and a horizontally extending dovetail groove formed in the body of the microscope. The dovetail connection permits the examining member to be mounted in place through its horizontal movement, thereby facilitating its mounting and removal.