CELLS AND MANOMETER ATTACHMENTS. 



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Fig. 13. — Solid glass stopper for use with substances which attack metals, 

 (a) Manometer tube; (b) vent for solution, closed by valve at lower end of stopper. 

 Fig. 14. — Glass manometer attachment for cells with straight necks, 

 (a) Manometer with straight tube fused to lower end; (6) space between manometer and glass 

 tube; (c) brass ring; (d) and (e) porcelain rings for compressing packing; (/) brass collar; 

 (ff). U')f C0> an d 0'), brass pieces with which to close the cell, and also to adjust initial pressure; 

 (A-) vent for solution. 



Fig. 15. — Glass manometer attachment for cells with straight neck. 

 Like that shown in Fig. 14, except that the glass tube is left open at the top, and then closed 

 with a brass cap and litharge-glycerine cement. 



