98 THE ANALOGY OF SOUND AND LIGHT. 



Manclia,' did, when by it he destroyed chivalry and knighthood in Spain; 

 or as Columbus did, when sailing in the Caribbean Sea, he discovered the 

 islands oif the coast of America, after having heard the gibes and jeers 

 about his absurd schemes of a western route to the Indies; because my doc- 

 trines are destined to supersede all accepted theories, that cannot explain 

 the phenomena that I have presented to the world. 



''According to the experiments of Yogel, E. Hunt and C. Lawson, in or- 

 der to get fruit or vegetables you must plant the seed under blue glass, to 

 start them quickly, and when they have germinated there you must trans- 

 plant the young plants under yellow glass, and, when their leaves are 

 formed, you must again transplant them under red glass, and then you will 

 insure a full development of the plant. How many crops would be raised 

 iby this process? And yet Yogel and Eobert Hunt are among the most emi- 

 nent scientists in Great Britain. Now I accomplish all these results by the 

 association of blue and sun-lights, by passing through blue and plain glass. 



"JSIow your criticism and that of Mr. Crooke in the first part of his ar- 

 ticle are based upon what you supposed to be the chemical action of light 

 upon living organisms, which will not explain any of the ^^henomena that 

 I have described, and hence actinism and the chemical theory must be 

 abandoned. You will all have to adopt the electrical and magnetic theory 

 that I have announced. You won't like it, but you will have to take it. It 

 will be like going to school again to learn your alphabet. 



"In conclusion, I may state that a gentleman of this city, Mr. Whitney, 

 having some valuable plants which he wished to stimulate, a la Yogel and 

 Hunt, directed his glazier to put yellow and green glasses in the windows 

 of his house last fall, and in a short time he found them all dead, killed by 

 those colors. He told me three days since that he had ordered these glasses 

 to be removed and the blue glass to be substituted therefor. A French 

 ■chemist has recently announced that the green and yellow colors are poi- 

 sonous to and destructive of life. 



"As you are a seeker after truth like myself, I Avould like you to explain 

 why the blue ray associated with white light causes such wonderful results, 

 and perhaps you may advance a theory more satisfactory than mine, and, if 

 so, I will gladly adopt it." 



THE ANALOGY OF SOUND AND LIGHT. 



"The Saturday evening free lecture in connection with the Loan Collec- 

 tion of Scientific Apparatus at South Kensington was lately given by Pro- 

 fessor Barrett, of the Royal College of Science, Dublin, on 'Some Experi- 

 ments Illustrating the Analogy of Light and Sound.' 



"The Professor commenced by referring to some of the well known facts 

 about light and sound, such as that sound waves travel through air, while 

 light waves travel through luminiferous ether, etc. Among many illustra- 



