News and Notes 253 



Each of these diseases is described and the methods of treat- 

 ment discussed in the above bulletin. 



Professor A. D. T. Cockerell, of the University of Colorado, 

 makes some interesting suggestions in a recent number of Science 

 (32: 205. 1910) regarding the preservation of type specimens. 

 The appointment of a committee by the American Association is 

 recommended, this committee to iuA^estigate and report upon the 

 condition of types in various institutions in this country and to 

 designate certain museums as fit places for their preservation. 



The principles enunciated by Professor Cockerell are as 

 follows : 



" I. A type is, from its nature, in some sense the property of 

 the scientific world. Thus, every one would consider it a crim- 

 inal act to purchase and then willingly destroy a type. It must 

 be considered reprehensible to permit types to exist where they 

 are in serious danger of being destroyed, and, in particular, steps 

 should be taken to prevent the sale of types to miscellaneous un- 

 known collectors after the death of the original owner. 



" 2. Every institution possessing types should publish a com- 

 plete list of those in its custody, and subsequently annual lists 

 of additions. It can then be held strictly accountable for their 

 care, and students can ascertain where the types are to be seen. 



3. No types should ever be loaned out and, especially, they 

 should never be sent through the mails. Experience shows that 

 institutions which profess to have a rule against the loaning of 

 types can not be trusted to keep it," 



