400 



Popular Science Monthly 



The Latest for Hair Dressers Is 

 a Combined Chair and Basin 



A chair which has been designed to make shampooing 

 operations easy for the shampooer and the shampooee 



THE discomfort and inconvenience of 

 getting the hair shampooed is almost 

 entirely eliminated by the use of a special 

 chair and basin. The chair, placed about 

 six inches in front of the basin, has a hinged 

 back which is lowered until the head rests 

 comfortably on a rubber neck-piece forming 

 part of the basin. With the head in posi- 

 tion the hair can be washed thoroughly. 

 Soap lotion is applied through a small 

 faucet and hose at the left. A gas heater in 

 a water compartment makes it possible to 

 get hot water instantly at any desired 

 temperature. 



electrical contact with a 

 battery comprising a num- 

 ber of dry cells, such as 

 are used in pocket flash- 

 lights. Between the two 

 electrodes is some blot- 

 ting paper which has 

 been charged with com- 

 mon table salt. Thus 

 in placing the electrode 

 in a glass or bucket of 

 water, the sodium chlor- 

 ide, or table salt, is elec- 

 trolytically changed into so- 

 dium hypochlorite, which con- 

 stitutes one of the most powerful 

 oxidizing or sterilizing agents 

 known. 



The effect of the oxidizing agent 

 is to destroy the dangerous germs 

 or bacteria and to render the water 



> sterile and safe for drinking. The 



i water does not lose any of its 

 dissolved gases and is not flat or 

 otherwise unpalatable after it has 

 been sterilized. Furthermore, the 

 salt used as an electrolyte does not impart 

 to the water a salty taste, since very little 

 of it is used. Within a short time after 

 bubbles of gas evolved at the electrodes 

 rise to the surface, all parts of 

 the water have been subjected 

 to the purifying oxidation. 

 Moving the electrodes 

 about in the water ac- 

 celerates the action. 



Charles F. Burgess, of 

 Madison, Wisconsin, is 

 the inventor. 



Sterilizing a Thousand Quarts of Water 

 with a Vest-Pocket Apparatus 



SOME remarkable claims are made for 

 the efficiency of a vest-pocket water 

 sterilizer that should free all travelers, 

 campers and soldiers from the germs lurking 

 in contaminated water. 



The apparatus is distinctly portable. A 

 complete equipment of large size is capable 

 of sterilizing eight thousand quarts of 

 water. It weighs only a few ounces. 

 Ordinarily, however, the apparatus is used 

 to purify a small quantity of water at a 

 time, a cupful, for instance; but it may be 

 used again and again with but slight re- 

 adjustments. 



The principle of the invention is simpli- 

 city itself. Two electrodes are brought into 



Sterilizing a cupful of drinking water 

 vest-pocket apparatus. It only takes 



with the 

 a minute 



