pear in a fami 

 lendencycan be 

 daughter so 

 that baldness 

 itself might 

 not show for 

 many genera- 

 tions. In the 

 long run half 

 the sons of a 

 bald man or a 

 woman carri- 

 er will be bald 

 and half of 

 the daughters 

 carriers. If 

 the mother is 

 bald all of the 

 sons will be 



Popular Science Monthly 



\y suddenly. The carrier bald and all 

 transmitted from mother to Illness will 



Father and daughter aged sixty and twenty-two. Both have lux- 

 uriant hair, although the father lost his in youth t'lrough fever 



813 



of the daughters carriers. 



occasionally cause bald- 

 ness in wom- 

 en when there 

 is only the 

 single inherit- 

 ed tendency. 

 In a case of 

 this kind not 

 all of the sons 

 will be bald. 

 Where there 

 is no tenden- 

 cy to baldness 

 the hair may 

 fall out from 

 poor health, 

 butafterw'ard 

 it is regained. 



A Bicycle Which Won't Let You Lose 



Your Balance 

 /VN APPARATUS has been invented by 

 l\ Eugene Tourtier, of Paris, France, 

 which gives bicycles, motorcj'cles and every 

 other similar vehicle a vertical equilibration 

 regardless of whether or not the road is level. 

 It is merely necessary to support the 

 machine in an upright position by operating 

 a lever attached to 

 the handlebar. 



The le^'er can 

 be operated while 

 the bicycle is mov- 

 ing, making it pos- 

 sible for a rider to 

 remain in his seat as 

 the wheel comes to a 

 stop and to start 

 again without dis- 

 mounting. 



The apparatus 

 consists of two steel- 

 rod supports pi\ot- 

 ally attached to the 

 rear frame of a bi- 

 cycle or motorcycle, 

 and a strong, flexible 

 wire which leads 

 from the supports to 

 the lever on the 

 handlebar. The sup- 

 ports may be forced 

 downward as the 

 bicycle moves, caus- 

 ing it to stop quickh- 

 and holding it up- 

 right and steady 

 when it does stop. 



The steel rod supports are 

 tain a combined weight of 



Cork Fabric for Featherweight 

 Raincoats 



CORK fabric is a recent French produc- 

 tion, the result of a new French proc- 

 ess. It is waterproof, a non-conductor of 

 heat, and unbreakable. By using a special 

 machine, thin slices of cork of an even 

 thickness are obtained from a block of cork. 

 The slices are placed in chemical baths in 

 order to remove the resinous parts which 

 make cork a. more or 'ess brittle sub- 

 stance. Upon their removal the cork 

 sheets become flexible and may be 

 compared in this respect with thin 

 leather. In fact, the sheets can be 

 folded and bent without breaking. 

 Bv combining the cork sheets 

 with any suitable cloth, prefer- 

 ably a thin and strong cloth of 

 good color, an excellent water- 

 proof material is obtained. An 

 adhesive preparation is 

 employed to glue the cork to the 

 cloth; or, if a stronger garment 

 is desired, the cork sheets are 

 placed between two layers of 

 cloth. The cork fabric has 

 a decided advantage over ordi- 

 nary rainproof ma- 

 terials because it is 

 porous, permitting 

 ventilation where 

 the ordinary rain- 

 coat prevents it. Of 

 course the cork is 

 very light. A coat 

 made of it is said to 

 be the lightest on 

 the market. 



strong enough to sus- 

 eight hundred pounds 



