216 NATURAL SCIENCE. March, t8 95 . 



mischief of separating fossil and recent forms into two entirely different categories 

 under different care and custody, and named and arranged by men differently 

 trained and having a different scheme of nomenclature. This issue I will, however, 

 reserve, merely stating here what is a perfectly well-known fact, namely, that a 

 number of fossil so-called species are as much entitled to the distinction as are the 

 mummified Pharaohs of ancient Egypt. A mummy, no doubt, looks very different 

 to a " nice fresh corpse," as a humorist once remarked, and a periwinkle in Clare 

 Market looks different to one from the Crag, but it does not follow that in either 

 case we should have a different name for the two forms. When a sweep is washed 

 he may still be a sweep, and it is best to call him so. 



Henry H. Howorth. 

 P.S. — I am pleased to have just received a letter from Sehor Herrera, of the 

 National Museum in Mexico, ardently supporting the position I have taken. 



H. H. H. 



Errata. 



This volume, p. 142, line 4 : for " Watken," read " Wathen." 



Page 139: Mr. J. E. Duerden was never Assistant in the Museum of Science 



and Art at Dublin, but Demonstrator in Biology and Palaeontology at the Royal 



College of Science there. 



Page 76 : Mr. G. F. Harris desires us to state that the comparison of a silicious 



sphere from the Yellowstone to Parkeria was not made by him, as might be inferred 



from our editorial note. 



WANTED. 



The following numbers of Natural Science : No. 1, March, 1892; 

 No. 8, Ociober, 1892 ; No. 11, January, 1893 > No. 12, February, 1893 ; 

 No. 23, January, 1894. The Publishers are prepared to give half-a-crown 

 apiece for clean copies of the above-named numbers until further notice. 



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