VI 



CONTENTS. 



Sect. 4. Effects of interposing diflferent substances be 

 tween conductors .... 



Sect. 5. On induced currents of the third, fourth, and 

 fifth order ..... 



Sect. 6. Induced currents of the different orders from 

 ordinary electricity .... 



Capillary transmission through solids . 



Letter on electrical induction .... 



Contributions to electricity. No. IV. On electro-dynamic in 

 duction ...... 



Sect. 1. Inductionat the beginning of a galvanic current 

 Sect. 2. On apparently two kinds of electro-dynamic in 

 duction ..... 



Sect. 3. Theoretical considerations on the preceding phe 

 nomena ..... 



On a reciprocating motion produced by galvanic attraction and 



repulsion. [A galvanic engine.] . 

 On the evolution of electricity from steam, &c. 

 Experiments on phosphorescence 

 On a simple form of heliostat .... 



On the effects of a thunder-storm 

 Contributions to electricity. No. V. On electro-static induc- 

 tion, and the oscillatory discharge 

 Experiments on phosphorescence 

 On a new method of determining the velocity of projectiles 



[An electrical chronograph.] ... 



On the application of the thermo-galvanometer to meteorology 



The theory of the discharge of the Leyden-jar 

 On the cohesion of liquids .... 



On the origin and classification of the natural motors 

 On a peculiar action of fire on iron nails 

 Observations on the relative radiation of the solar spots 

 On the capillarity of metals .... 



On the protection of houses from lightning 



On color-blindness. [A review.] . . . 



Experiments on the electrical discharge , . 



Experiment on the magnetic polarization of light 



On the relation of telegraph lines to lightning 



On the "fountain-ball; " and on the interference of heat 



On the atomic constitution of matter 



On the height of the aurora .... 



Year. Page. 

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