6 



them in the preparation of their magnificent Monograph of the 

 Palseozoic Crinoids. The Curator of the Museum has always felt 

 special interest in this monograph ; it owes its origin to the work 

 of Mr. Wachsmuth, based upon his original collection now in 

 the Museum. On the death of Professor Agassiz, when Mr. 

 Wachsmuth left Cambridge, he started a new collection, and, 

 with the assistance of his devoted and indefatigable collaborator, 

 has brought together a second collection, unique in its waj% 

 which has become well known to palaeontologists from the " Re- 

 vision of the Palseocrinoids." It is hoped that some arrangement 

 may be made by which the publication of this monograph, so 

 much of which is based upon the work of Mr. Wachsmuth on 

 the collection now in Cambridge, may eventually appear in the 

 Memoirs of the Museum. 



It will be seen from the special Reports of the Assistants, that 

 the collections of the Museum continue in good condition, and 

 that the Assistants not only have been active in the increase and 

 care of the collections in their charge, but have been able to 

 devote considerable time to original work, as shown by the lists 

 of the publications of each Department accompanying the special 

 Reports. 



Appendix A of this Report contains a list of the publications 

 of the Museum issued during the past academic year. 



We have published twelve numbers of the Bulletin, four in 

 the Geological, and eight in the Zoological Series. One number 

 of the Memoirs, " The Genesis of the Arietidas," by Professor 

 Hyatt, has been published jointly with the Smithsonian Insti- 

 tution. This important memoir has been in preparation by 

 Professor Hyatt for a number of years, and is an important con- 

 tribution to the palseontological history of the Cephalopods. 



A number of Bulletins are in preparation, representing the 

 work of the students of the Zoological Laboratory in charge of 

 Professor Mark. 



Mr. Louis Cabot is preparing the final part of his Memoir on 

 the Immature State of the Odonata. 



Mr. Garman is preparing for the press a monograph on the 

 Liparidse, commenced several years ago by Professor Putnam. 

 He has also nearly completed an account of the North American 

 Reptiles. The second part of the Memoir on the Development 

 of Osseous Fishes, by Professor Whitman and myself, is nearly 



