Popular Science Monthly 



660 



graph itself. The singer stood practical- 

 ly upon the edge of this huge horn's 

 mouth, for such was the room. The 

 results were no better than those ob- 

 tained by stationing the singer in front 

 of an ordinary phonograph in an ordi- 

 nary room. As a result we find that no 

 special effort is made by the phonograph 

 companies to utilize rooms of special 

 shape so as to gather all sounds and con- 

 centrate them upon the record. 



which, he claims, adequately prevents 

 the cab from upsetting, even in going 

 around the sharpest and swiftest of 

 curves. The additional wheel is placed 

 under the driver's seat, almost in dan- 

 gerous proximity to the horse's heels. 

 It is fitted with springs on either side 

 and performs the incidental function of 

 absorbing jars and jolts. Even in spite 

 of the added factor of safety which the 

 third wheel provides, it is doubtful if 

 the cab will continue to be 

 popular in London. Cheap 

 taxicab service and the fam- 

 ous London 'bus have crowd- 

 ed the horse almost entirelv 

 from London thoroughfares. 

 Hansoms, which are just now 

 beginning to lose their vogue 

 in New York, have not been 

 seen in London streets for 

 se\'eral years. One of the 

 last to be remo\'ed has been 



A London cabby designed this three- 

 wheeled cab. The third wheel prevents 

 the cab from tipping over, even when mak- 

 ing the shortest and quickest of turns 



It is difficult to believe that the 

 technique of making records cannot be 

 improved. In view of the elaborate 

 studies of echoes and reverberations 

 made in large auditoriums for the pur- 

 pose of improving their acoustic proper- 

 ties, it seems that the time is now ripe 

 for a new series of experiments which 

 will show how those sounds may be gath- 

 ered which are now lost. 



The record made by the artist is 

 called a master record. In fact, two 

 records are made, one being hermetically 

 sealed and stored away in the company's 

 archives for future generations. The 

 other record is used for the preparation 

 of a die for making commercial records. 



This Cab Simply Can't Tip Over 



A CITY cabman of London has 

 devised and built an attachment in 

 the form of a third wheel for his cab, 



placed in the British Museum as a relic 

 for future generations to gape at. 



Gasoline in Bulk for Panama 



GASOLINE is being shipped in bulk 

 to Panama. The first consign- 

 ment arrived at Balboa in February and 

 was unloaded into the new storage tank 

 recently erected by the Panama Canal 

 Commission. In Panama there is now 

 stored fuel for ships of all sorts, gasoline, 

 crude oil and Diesel oil. Considerable 

 gasoline is still on hand in Panama in 

 drums, the supply being sufificient to last 

 at the present rate of consumption 

 about five months. 



