\ 



213 



Rotiili Chartarum in Turri Londinensi Asservati. AccuranteThoma 

 Duffus Hardy, S. S. A. e Soc. Int. Tempi. Lond. Vol. i. 

 part I. Ab anno Mcxcix. ad annum mccxvi. 



Registrum vulgariter nuncupatum, " The Record of Caernarvon-," 

 e Codice m.s'°. Harleiano 696 Descriptum. 



General Report to the King in Council from the Honourable Board 

 of Commissioners on the Public Records, appointed by His 

 Majesty King William IV., by a Commission dated the 12th 

 March in the first year of his reign ; with an Appendix and 

 Index. — Bi/ the Commissiomrs on the Public Records of the 

 Kingdom. 



The foUowinff communications were read : 



1 . On the Fourth and Sixth Nerves of the Brain, being the 

 concluding paper on the distinction observed in the Nerves 

 of the Encephalon and Spinal Marrow. By Sir C. Bell. 



As no fewer than six of the nine nerves which arise from the 

 brain are connected with the organ of vision, he finds it necessary 

 to announce, not only the distinct sensibilities possessed by the organ 

 of vision, but the motions to which it is subjected. Having shewn 

 the connection of the voluntary motions of the eye-ball with the 

 sensation on the retina, and the motions involuntary and for the 

 protection of an organ so delicate and so exposed, he proceeds to 

 shew the necessity of combinations among the muscles of the eye. 

 As there are no direct communications between the muscles, neces- 

 sarily united in action, he shews the necessity of distinct nerves, 

 and also the necessity of their relations being established at their 

 roots, and hence deduces the reason of the fourth and sixth nerves 

 deviating from the others in their place and mode of origin. 



The paper concludes with a recapitulation, accounting for the 

 fact that no one nerve of the head is like another, and why they 

 are all different from the spinal nerves. 



First, As to the irregularity of the Nerves of the Senses, they 

 all tend inwards to that column which has received the nerves of 

 sense, and must take a course round the column which extends 

 from the spinal marrow to the brain, and which is given to the vo- 

 luntary motions. Hence the form of the tracius opticus — the pecu- 

 liar roots of the olfactory nerve, and coarse of the roots of the au- 

 ditory nerve. 



Second, The second, third, fourth, part of the fifth, the sixth, in 

 addition to the nerves of the eyelids, crowding into the orbit ; each 



