SCIENCE 



New Series 

 Vol. LII, No. 1356 



Friday, December 24, 19'^^^ 



Single Copies, 15 Cts. 

 Annual Subscription, $6.00 



OIL EMULSION APi ^I^IATUS 



for the 



DEMULSIBILITY TEs'v 



U. S. NAVAL STATION DESIGN 



IMPROVED BY E. & A. 



w 



T^HE BATH maintains the contents of the 

 graduated cylinder at a temperature of 

 55°C. There is a special stirrer, with motor 

 and governor, for maintaining a constant 

 speed of 1 500 R.P.M. 



This apparatus is used and is especially rec- 

 ommended for determining the quality of 

 Fuel oils for internal combustion engines. 

 It has also been recommended for Physical 

 Chemical Laboratory experiments, as the 

 emulsification quality is a factor of the Sur- 

 face Tension. 



E.&A. improvements are the arrangement 

 whereby the bath moves up and down in- 

 stead of the motor, and the governor for the 

 motor The apparatus is furnished com- 

 plete w^ith motor, governor, stirrer, electric 

 heating arrangement, and 6 cylinders. 



mend 



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