294 BAUSSI ROSSI. 



endeavoured to use the luminous bacteria for making 

 livincr safety lamps, (jlass o-jobes were coated on their 

 inner surface \\-ith a thin la\er of gelatine containing 

 germs oL' Baclcrlii]]i plmspliorinni. The bacteria increased 

 ra[)idh and after a da\- or two began to shine witli a 

 beautiful bluish green light. This lasted a fortnight. 

 A few of these globes are sufticient to illuminate a dark 

 room SI) tliat objects can be clearh' seen. Since tlie 

 cold light of tliese bacteria does not ignite either 

 powder or gas these lamps ma\' perhaps come into use 

 in powder magazines and specialh dangerous mines. 



chaptp:r \m. 



Among the coloured pictures seen in the shop 

 windows of Alentone | there are alwa\s \'iews of the 

 "Iiaussi Rossi" representing them in the reddest of 

 evening liglits. "I'he rocks whlcli go b\ tliis name are 

 actualh' in Itah', and are soon reached by the road 

 which runs along close to the sea heA'ond (iaravan. 

 Tliey are formed ot a reddish lime-stone. There are 

 ca\'es in these rocks in which imjDortant clisco\'eries of 

 prehistoric remains ha\'e been mafle. The view of 

 Mentone from this projection of the coast is ver\- 

 bcautiful, even though not equal to that from the road 

 above. Those \\ho arc not afraid of a steep climb 

 would do u'cll, after ^'isiting the caves, to ascend the 

 footpatli wliich leads up to (irimaldi, returning to 

 Alentone \i\ the upper road. 



Tlie caves of the Baussi Rossi had alreach' aroused 

 the interest of Horace fJenedict de Saussure towai'ds the 



