Abstract: Distillation apparatus for steam distilling of solvents is disclosed in combination with phase separation means which is readily adjustable to accommodate fluids which are either more dense or less dense than water. This is accomplished in the preferred embodiment by attaching a pipe to an appropriate opening in the phase separation means. This permits a readily changed operation from one solvent to another and permits standardization of manufacture to accommodate essentially all water immiscible solvents.

Abstract: A method and apparatus for the administration of medical injections. After insertion of an injection needle into a patient, a negative pressure differential is applied to the exposed end of the injection needle so that if the injection needle has been inserted into any artery or a vein, blood will be drawn up into the needle. A transparent window allows the person administering the injection to observe whether any blood has been drawn into the needle.

Abstract: A dispensing device of the syringe type is provided, that is constructed at its dispensing end for facilitating substantially complete discharge therefrom. Also, interior walls of the container are provided with mutual interconnecting means, and with the container being substantially flexible, the walls are secured together as they are pressed together, also for facilitating substantially complete discharge from the container. The device is particularly adapted for use with syringes of the throw-away type, for dispensing medicine, inoculation, or the like by means of a needle.