=Stand= with iris diaphragm =26.--= [Illustration: Stand IV.] =Stand IV.= The dimensions of this stand are now larger than formerly. The price has not been changed. 18. =Small Microscope.= Adjustable by sliding tube and micrometer-screw. The draw-tube is graduated in millimeters. Cylinder-diaphragm with sliding sleeve. Concave and plane mirrors, obliquely adjustable. Objectives 3, 6, 8. Eye-pieces I, III. Magnifications 60—550 =52.--= 19. =The same.= Objectives 3, 7. Eye-pieces I, III. Magnifications 60-450 =36.--= 20. =The same= without Cylinder Diaphragm, with Wheel Diaphragm. Objectives 3, 5, 7. Eye-pieces I, III. Magnifications 60—450 =44.--= 21. =The same.= Objectives 1, 3, 7. Eye-pieces I, III. Magnifications 18—450 =40.--= 22. =The same.= Objectives 3, 7. Eye-pieces I, III. Magnifications 60—450 =34.--= =Stand= with cylinder-diaphragm, without objectives and eye-pieces =14.--= =Stand= with wheel-diaphragm, without objectives and eye-pieces =12.--= [Illustration: Stand V.] =Stand V.= 23. =Small Microscope=. Adjustable by sliding tube and micrometer-screw. Concave mirror. Objectives 3, 7. Eye-pieces I, III. Magnifications 60—450 =30.--= 24. =The same.= Objectives 3, 5. Eye-pieces I, III. Magnifications 60—250 =28.--= 25. =The same.= Plane mirror. Objectives 1, 3. Eye-pieces I, III. Magnifications 18—80 =24.--= 26. =The same.= Objectives 3. Eye-pieces I, IV. Magnifications 60—105 =18.--= 27. =Stand= without objectives and eye-pieces =8.--= [Illustration: Stand VI.] 28. =Auxiliary Laboratory Stand=, for the examination of trichinae and for searching plate cultures. Very large stage (3-1/2×4 inch.). Adjustable by means of a carefully constructed rack and pinion, rendering it possible to focus objectives of fairly high power. =Stand=, without eye-pieces, objectives or case =8.--= 29. This stand fitted with objective 3, eye-pieces 0 and IV. Magnifications 40 to 100, in mahogany case fitted with lock =18.--= 29a. =The same stand= fitted with eye-piece II and objective having separable front lens, yielding a magnification of 40 and 100 diam =18.--=