Numerous inventions now requisite. 71 



the nitrogen of the air into valuable products, such as 

 nitric acid and ammonia. To find uses for the im- 

 mense quantities of minerals which abound all over 

 the earth ; to utilise wolfram and find applications for 

 tungstic acid; to apply titanic acid to great industrial 

 purposes ; to produce aluminium on the large scale, as 

 we now produce iron. To tan leather more quickly, 

 and without detriment to its quality. To prevent the 

 rusting of iron. To more perfectly prevent smoke. 

 To collect and use the sulphuric acid of the salt cake 

 consumed in the glass manufacture. To make window 

 glass by means of common salt. To deodorise offen- 

 sive substances. To find larger uses for phosphorus, 

 sodium, magnesium, and common salt. To remove 

 phosphorus and sulphur from iron ores, and sulphur 

 from coal and coke. To obtain a good white alloy 

 as a cheaper substitute for German silver. To convert 

 white phosphorus into the red variety by a less dan- 

 gerous process than the present one. To prevent the 

 putrefaction of " peltries " in glue making. To obtain 

 better and cheaper materials for colouring glass. To 

 more perfectly prevent animal food from change. To 

 obviate or prevent explosions in mines. To perfectly 

 purify ordinary red lead for making flint glass. A 

 cheaper process for converting common salt into 

 washing soda ; and so on without end. 



We. also very badly require a method of recording 

 our thoughts in readable forms upon paper, without 

 the slow and laborious process of writing. An incal- 

 culable amount of brains and of intellect, especially of 



