CHEMICAL GERMAN 237 



>( Siedepunkt, m., boiling point. 



Siedeverzug, m., retardation of boiling from superheating a liquid. 



Siemens-Martin-Ofen, m., open hearth steel furnace; so named when the 

 Siemens gas producer was introduced in open hearth practice, in the 

 Martinofen. 



Silber, n ., silver. 



Silicium, ., ) 



Silizium, } sillcon - 



Silikatgestein, m ., silicate rock. 



sinngetreu, true to the meaning. 



Sitzungsbericht, m., -e, report of proceedings, action and discussions at a 

 meeting of a society. 



Skala, f, t Skalen, scale; graduated scale of a thermometer or other meas- 

 uring instrument. 



Skalenintervall, n., -e, division of a graduated scale. 



Smalte, /., smalt. 



Smaragd, m., emerald. 



Soda, f. t sodium carbonate, soda ash. 



Sodakristalle, pl. f sal soda, the salt Na 2 CO 3 ioH a O. 



Sole, /., -n, brine. 

 3 ^Sorgfalt. f, r care, attention. 



Spalt, m., -e, slit of a spectroscope. 



Spaltbarkeit, /., cleavage. 



Spalte, /., -n, column of a book or list. 



spalten, t. and t., to split; to cleave (mineralogy). 



Spaltung, /., cleavage. 



Spaltungsflache, /., -n, cleavage plane (mineralogy). 



Spaltungskristall, m., -e, cleavage crystal (mineralogy). 



Spaltungsrichtung, /., direction of cleavage. 



Spannkraft, f. t tension, vapor pressure. 



Spat, m., spar (mineralogy). 



Spateisenstein, m., siderite. 



Spatel, m., , spade; spatula. 



speisen, t. and t., to feed ; to feed a furnace, a boiler, etc. 



sperren, t., to confine (e.g., a gas by a liquid). 

 / Sperrfliissigkeit, f. t confining liquid (gas analysis). 



Spiegel, m., -, mirror. 



Spiegelbild, ., -er, mirror image. 



Spiegelglas, n., plate-glass. 



Spiritus, m., alcohol; used in a vague sense without reference to concen- 

 tration, spirits. 



\spratzen, i. t to bubble, the bubbling of melted silver or copper due to the 

 escape of dissolved oxygen. 



