14a. =Medium Size Microscope=, stand inclinable to the extent of 45, tripod foot, coa.r.s.e adjustment by rack and pinion, fine adjustment by micrometer screw. Draw-tube with millimetre scale. Illuminating Apparatus and Iris-diaphragm permanently connected and sliding in a sleeve underneath the stage. The cylinder-diaphragm is used in the same manner. A ring below the iris-diaphragm serves to hold a ground gla.s.s or colored disc.

Triple nose-piece.

Objectives 3, 6, Oil-Immersion 1/12, N. A. 1,30.

Eye-pieces I, III, IV.

Magnifications 60-1000 =104.--=

14b. =The same= with Illuminating Apparatus.

Triple nose-piece.

Objectives 3, 6, 8.

Eye-pieces II, IV.

Magnifications 70-700 =78.--=

15a. =The same= without Illuminating Apparatus.

Double nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =50.--=

15b. =The same= without Illuminating Apparatus and nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 85-450 =44.--=

=Stand= with Illuminating Apparatus and Iris-diaphragm =32.--=

=Stand= with Cylinder or Wheel-diaphragm =22.--=

=Cylinder iris-diaphragm= (p. 23) =6.--=

For the addition to this microscope of a lateral screw for raising and lowering the illuminating apparatus as on Stand IIa, an extra charge of $2.-- is made.

[Ill.u.s.tration: Stand III.]

=Stand III.=

Stand III is now provided with rack and pinion coa.r.s.e adjustment instead of sliding tube. In consequence a nose-piece can be used on it to better advantage. It will be found an excellent laboratory stand at low price.

16a. =Medium Size Microscope=, non-inclinable stand, coa.r.s.e adjustment by rack and pinion, fine adjustment by micrometer-screw. The draw-tube has a millimetre scale.

Plane and concave mirror. Wheel-diaphragm.

Triple nose-piece.

Objectives 3, 6, 8.

Eye-pieces I, III.

Magnifications 60-550 =66.--=

16b. =The same= without nose-piece.

Objectives 3, 6, 8.

Eye-pieces I, III.

Magnifications 60-550 =58.--=

17a. =The same=, with double nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =48.--=

17b. =The same= without nose-piece.

Objectives 3, 7.

Eye-pieces I, III.

Magnifications 60-450 =42.--=

=Stand= with wheel-diaphragm =20.--=

=This stand= can be supplied with iris diaphragm in stage (see ill.u.s.tration p. 23) instead of wheel-diaphragm.

=Stand= with iris diaphragm =26.--=

[Ill.u.s.tration: 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.--=

[Ill.u.s.tration: Stand V.]