No.

fe s. d. Codeword

described under item No. 121, but instead of being regulated by hand is provided with a clockwork regulating mechanism. This has over all other automatic regulating devices this great advantage that the carbon is made to advance with perfect regularity, instead of being pushed forward in jerks, with the result that the luminous arc remains perfectly stationary with respect to the condensing lens throughout the whole time that the lamp is working 3. 5. 0 Liliputian The Clock-regulated Liliput Arc Lamp should be used exclusively with resistances and carbons supplied by us. When ordering the nature and voltage of the available current should be specified.

125. ”Ivory“ Glowbulb on Stand. This is a 16-c. p. electric lamp, which will work equally well on a direct current and alternating current circuit. It furnishes a soft light which is exceedingly well adapted for microscopic observations and very pleasant to the eyes. It can be connected to any domestic supply system by a plug contact.

When ordering, the voltage of the system should be stated 0.15. 0 Birne

126. Ground Glass Screen on Stand...........................0. 1. 0 Matt

127. Resistance for 110 volts, for use with Liliput Arc Lamps 0.10. OWiderstand

128. Resistance for 220 volts, for use with Liliput Lamps . 0.18. OWiderstehe

129. Carbons for Liliput Lamp, per pair.....................0. 0. 2 Kohle

Illuminating Lens on Stand, No. 130.

130. Illuminating’Lens, 100 mm diameter, on Stand and capable

of being raised and lowered as well as rotated in all directions 1. 0. 0 Illuminize

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