668 June 18, 



varieties of auroree are confined to these two ; for General Sabiiie 

 has informed me that he himself, along with the late Sir Edward 

 Parry, observed at Lerwick in the Shetland Isles in 1818, at the 

 same instant, two auroral arches crossing one another at an angle. 

 But, be this as it may, when we reflect that there are many kinds of 

 particles in our earth, some of which may be affected more rapidly 

 than others by a primary magnetic force, we shall cease to wonder 

 that the phenomena presented are of a complicated description. 



All these considerations have induced me to think that it is lost 

 labour to attempt a quantitative comparison when our observation 

 of the magnetic disturbances and their corresponding earth-currents 

 is confined to one locality ; and it will be seen from this paper, that 

 while endeavouring to uphold the hypothesis of induced action, I 

 have done so by a comparison of a general and qualitative rather than 

 by one of a quantitative nature. 



XV. " Further Observations in favour of the View that Nerve- 

 fibres never end in Voluntary Muscle." By LIONEL S. 

 BEALE, M.B., F.R.S., Fellow of the Royal College of 

 Physicians, Professor of Physiology and of General and 

 Morbid Anatomy in King's College, London ; Physician to 

 King's College Hospital, &c. Received June 5, 1863. 



Few anatomical inquiries of late years have excited more interest 

 than the present one. Since my paper published in the * Philosophical 

 Transactions' for the year 1860, several memoirs have appeared in 

 Germany. In my paper just published in the last volume of the 

 ' Transactions,' I have replied to the statements of Kiihne and Kol- 

 liker, but I had not succeeded in actually tracing the very fine 

 nucleated fibres I had demonstrated from one undoubted nerve-trunk 

 to another. As a demonstration, therefore, my conclusions were 

 defective, though the only explanation to be offered of facts I had 

 observed was that included in the view I propounded in my first 

 paper. The question between my opponents and myself upon this 

 matter is not one of interpretation, but a question of simple fact. 

 I assert that the fine nerve-fibres can be followed much further than 

 the point where Kiihne and Kolliker maintain the ends or termina- 



