32. =Dölken's Stand.= (p. 52) The stand is larger than Stand No. Ia, but is modified as shown in the cut so as to permit the examination of unusually large preparations. It is provided with the illuminating apparatus b (p. 22) and with all the adjustments necessary to the use of high powers. =Stand= and illuminating apparatus, without nose-piece =80.--= [Illustration: Travelling Microscope No. 33.] $ 33. =Travelling Microscope.= This microscope is ready for use after spreading the foot, drawing out the tube and setting the mirror and stage in position. It is provided with all the adjustments of Stand No. V, consisting of fine adjustment by micrometer-screw, coarse adjustment by rack and pinion and illuminating apparatus d (p. 22). The box is arranged so as to accommodate three objectives and two oculars. It locks, has a handle, and measures 25×15×7 cm, the whole apparatus weighing 5 pounds. Price of this microscope with illuminating apparatus, but without objectives or oculars =32.--= =The same=, without illuminating apparatus =24.--= [Illustration: Large Travelling Microscope No. 34. (Size of mahogany case 28×19×8 cm.)] This instrument (in size like the Ib.) combines all the essential features of a large laboratory microscope with a folding stand. It will be found invaluable on scientific expeditions, for research work etc. When lifted out of the case, spread the two parts forming the base, which are then held by a spring-catch. After raising the tube, turn the stage around and tighten it by means of a lever. It is supplied with large Abbe condenser and Iris diaphragm adjustable by side screw. Coarse adjustment by rack and pinion, fine adjustment by micrometer-screw. Graduated draw-tube. The stand has joint for inclination. [Illustration: Large travelling microscope No. 34 (set up).] 34. =Stand= with Abbe Condenser and Iris-Diaphragm, double nose-piece =66.--= 35. =The same=, with objectives 3, 6, Oil-Immersion 1/12", N. A. 1,30. Eye-pieces I, III. Magnifications 60—800 =128.--= [Illustration: Horizontal-Microscope.]