150 SYDNEY T. KLEIN, F.L.S., E.R.A.S., ON THE 



of the instrument is exactly equal to that of the iron mass, and 

 it is therefore, as we saw in the last experiment, able to 

 influence the bar sympathetically ; you will see that the 

 slightest touch throws the bar into such violent vibration that 

 a great volume of sound is produced, which could be heard a 

 quarter of a mile away. The result of this sympathetic touch 

 is far from being transient, in fact the bar will continue to 

 move, audibly, for a long time. This movement in the mass of 

 iron w^as started by physical contact, but having once started 

 the bar praying, willing, or thinking, whichever you like to call 

 it, that bar now has the power to affect, without contact, 

 another bar of iron even when removed to great distances, 

 provided the second bar possesses a similar characteristic and 

 that that characteristic has been brought into perfect sym- 

 pathy with that of the first bar. I have here a second bar 

 which fulfils these conditions, and, although at the outset it 

 had no powder whatever to respond, it has been gradually, as 

 it were, educated, namely, brought nearer and nearer into 

 sympathy with the first bar, until it is now able, as you 

 can hear, to respond across long distances, even the whole 

 length of this hall. We will now reverse the process 

 of bringing these bars into sympathy and I will throw 

 the first out of harmony by slightly changing its charac- 

 teristic ; the change is extremely small, quite unappreciable 

 to the human ear, the bar giving out as full and pure a note 

 as it did before the alteration was made, in fact, the change is 

 so slight that it can still, with a little force, be stimulated by 

 the same generator, and yet the whole power to influence has 

 been lost ; you can hear that the first bar, although it is 

 praying with great force, gets no response from the second bar, 

 and even if the bars are now brought on to the same table and 

 put within a few inches of each other there is still no reply, 

 there is no sympathetic action, the efticacy of prayer between 

 the two has been lost. 



Do we not then see the principle upon which the efficacy of 

 Prayer depends ; the whole object of a Human Soul, when using 

 the words " Thy Will be done," is to bring itself closer and closer 

 into perfect harmony with the Deity, when that is accomplished 

 we may understand, from our simile, that not only will we and 

 our aspirations be influenced by the Will of the Deity, but that 

 then our wishes, in their turn, must have great power with God, 

 and it becomes possible for even " Mountains to be removed and 

 cast into the midst of the sea." 



How truly the Philosopher Paul, at the beginning of our Era, 



