PEEFACE 



TO THE 



SECOND VOLUME. 



J_HE second volume of the Physiological Catalogue comprises 

 descriptions of the Nervous System of the Invertebrata (exclusive 

 of sense-organs), and of the Brain and Spinal Cord, with their 

 membranes and blood-vessels, of the Vertebrata. The descrip- 

 tions of the Invertebrata have been intrusted to Mr. R. H. 

 Burne, B.A. Oxon., Assistant in the Museum, who has so 

 largely enriched this department of the Collection ; he has also 

 described the Brain and Spinal Cord of Fishes, Amphibia, 

 and Birds, also Spinal Cords and Membranes. 



Prof. G. Elliot Smith, M.D., Fellow of St. John's College, 

 Cambridge, who has contributed so much to our knowledge of 

 the Brains of Mammals, has described those of Reptiles and the 

 Mammalia, his work forming by far the largest and most 

 important part of this volume ; he was assisted in the Primates 

 by Mr. W. L. H. Duckworth, M.A. Cantab. 



The specimens of Mammalian Brains have all been re- 

 mounted on the improved plan devised by Mr. William Pearson, 

 our Prosector, that enables all the convolutions to be seen. 



The generic and specific names used are those most recently 

 adopted in the British Museum. 



The value of the work has been greatly enhanced by the 

 admirable drawings made by Mr. J. Green with his accustomed 

 skill. 



C. STEWART, 



Conservator. 

 28 July, 1902. 



