2 9. Marcy’s Triple Jet, alcohol, concentric and mixed (see Manual, p. 158)..................................................$15 00 Without alcohol fountain.............. ...................... 12 00 10. THU TIME-TIGHT SCIOPTICOJT, complete, including triple jet and clamp, and the automatic cut-off, with its peculiar slide carrier (see Introduction, p. ix, and Manual pp. 161,168)............. 50 00 11. Same as No. 10, but without the alcohol fountain............ 47 00 12. Same as No. 11, but without the cut-off........................ 42 00 13. Both the Oil Sclopticon No. 1, and the Gas Sciopticon No. 10, all complete, but with only one set of lenses (see Intro¬ duction, p. xi).................................................. 70 00 14. Same as No. 13, but without alcohol fountain................ 67 00 15. Dissolving CocTt, with screws to adjust to either mixed or concentric Jets (see Manual, p. 171)........................... 12 00 16. Dissolving Code, for alcohol burners.......................... 6 00 «AS BAGS, GENERATORS, ETC. 17. India-Rubber Bag, best quality, 30 Inches long by 24 inches wide, with large stop-cock.................................... 10 00 18. India-Rubber Bag, best quality, 40 inches long by 30 inches / wide, with large stop-cock.................................... 14 00 19. India-Rubber Bag, large size wedge, best quality, 40 inches long by 30 Inches wide, with large stop-cock........ 18 00 20. Pressure Boards (generally improvised—see Manual, p. 175)............................................................ 3 00 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. -Ector* and cap, wash-bottle and connections (see Manual, p. 1/3, Fig, 46, 5, c, 4, €,J)...................................... Gas Furnace (see Manual, p. 173, Fig. 46, a) 7 00 2 00 Alcohol Tamp, with three wicks, for heating retort, etc. (common stove often used instead).......................... 1 00 Same as No. 21, but of extra size, for gasometer, described in Manual, p. 182.................................................. 0 00 Five-gallon Hydrogen Generator (see Manual, p. 175, Fig. 47, a, b, d, e,f)................................................... 7 00 Ten-gallon Hydrogen Generator, for gasometer (boxing included, as usual)............................................. 9 00 Self-condensing Oxygen Gas Cylinder, with gauge and wrench (see Manual, p. 170)................................... 45 00 Self-condensing Hydrogen Gas Cylinder, with gauge and wrench............. 60 00 Pair of Self-condensing Cylinders, same as Nos. 27, 28....... 100 00 Rubber Tubing, per foot......................................... 25