REPORT OF ASSISTANT SECRETARY. 



73 



fishes and Crustacea, aud a collection of eight hundred and four plants 

 from the Dakota group. A portion of the latter was, as already men- 

 tioned, described by Professor Lesquereux, in Monograph xvii of the 

 United States Geological Survey. Professor Lesquereux also studied 

 the material from the Cretaceous and Tertiary of Colorado referred to 

 above, and the Triassic and Paleozoic fishes and Crustacea have been 

 studied by Cope, Hall, Whitfield, and others. 



It is not too much to say that the National Museum has never received 

 a gift of greater scientific value or importance than that acquired through 

 the generosity of Mr. Lacoe. 



Interesting data concerning the number of published types of Paleo- 

 zoic plants in the Lacoe collection, and in the other collections of the 

 National Museum, are presented in the followiug- tabulated statements: 



I.— PALEOZOIC PLANT TYPES IN THE LACOE COLLECTION. 



