165 



so many newspaper remedies published. Many of them have their good 

 points, but the majority are worthless. In fact, rather than put faith in 

 half of those which have been published, it were better to rely on the 

 recipe which T. A. Janvier gives (in his charming article on "Mexican 

 Superstitions and Folklore," published in a recent number of Scribner's 

 Magazine) as current among the Mexicans : 



" To Get Rid of Cockroaches. — Catch three and put them in a bottle, and 

 so carry them to where two roads cross. Here hold the bottle upside 

 down, and as they fall out repeat aloud three credos. Then all the cock- 

 roaches in the house from which those three came will go away." 



A NOTE OX LOX1A curvirostra. By W. S. Blatchley, 



On a simple air thermometer for use in determining iiigii temperatures. 

 By W. A. Noyes. 



[Abstract, j 

 The thermometer consists of a bulb of hard glass having a capacity of 

 about 20 cc. and connected with a gas measuring tube by means of a long 

 capillary tube. This tube is protected by means of a double walled iron 

 tube cooled by a stream of running water. The capacity of the bulb 

 having been determined, the amount of air expelled from it when it is 

 introduced into the furnace furnishes the data necessary for calculating, 

 approximately, the temperature. The apparatus was used successfully at 

 650° C. but for higher temperatures a porcelain bulb would be required. 



The electrical oxidation of glycerin. By W. E. Stone and H. N. 

 McCoy. 



[Abstract. | 

 The oxidation products of glycerine vary according to the means em- 

 ployed. We have made use of the electric current acting upon dilute 

 solutions of glycerine in the hopes of obtaining glyceric aldehyde. The 

 conditions of dilution, strength of current, temperature and conducting 

 mediums have been varied. 



