CRUISE OF THE BARRERA 



proceeded to enlarge the scope of the expedition 

 by inviting other naturalists to join the party. 

 Mr. George H. Clapp one of the directors of 

 Carnegie Institute of Pittsburg, my enthusiastic 

 companion of many collecting trips, was already 

 preparing to leave for Havana by May 1st. Dr. 

 Paul Bartsch, Curator of the Department of Marine 

 Invertebrates of the National Museum at Washing- 

 ton, accepted an invitation to accompany us, and 

 his connection with the expedition at once added 

 new importance to the undertaking. Dr. Bartsch 

 is a veteran collector of great energy and skill and 

 is one of the best all-around field naturalists living. 

 His chief object in joining the Barrera company 

 was to make as extensive collections as possible 

 of the entire fauna of the region and particularly 

 for use in the exhibition series in the new National 

 Museum building. An attempt is being made by 

 the museum authorities, in the public exhibition 

 series, to retain the precise colors of all specimens 

 that must be kept in preservative fluid. Pigments 

 have beto found that are insoluble in alcohol, but 

 the problem still confronts the preparators to 

 employ the exact shades of color. Many of the 

 marine creatures desired for exhibition purposes, 



