4 



In the north wing, which is now completed, the basement will 

 be devoted to the storage of the alcoholic collections, intended 

 for specialists, and to suitable workrooms for the assistants. 

 The first story will contain the Synoptic room, the Palaeonto- 

 logical exhibition-rooms, and the storage-rooms for Palaeontology 

 and Geology. The gallery floor of the first story will contain the 

 workrooms for the assistants and specialists in Geology and Pa- 

 laeontology, as Avell as the rooms devoted for the present to Com- 

 parative Anatomy. The second story and its gallery is entirely 

 devoted to exhibition-rooms, containing the Systematic and Faunal 

 collections ; while the mansard story contains the Entomological 

 Department with its workrooms, the Conchological Department, 

 and the storage and workrooms devoted to Birds, to Mammals, to 

 Radiates, and to Articulates, into which specialists will be admitted 

 under the supervision of the Museum assistants. 



In the northwestern corner-piece there will be only three exhi- 

 bition-rooms, one Faunal room devoted to Europe, and two large 

 rooms intended for the Atlantic and Pacific Oceans. Three large 

 laboratories adjoining the palaeontological and geological work- 

 rooms of the assistants, will be devoted to undergraduates and 

 students in Geology and Palaeontology. 



Three similar laboratories will be devoted to Biology, the 

 materials for study to be drawn either from the alcoholic and 

 other stores of the Museum, or from the vivarium and aquarium 

 which are to occupy the greater part of the basement of the cor- 

 ner-piece. In the former we shall hope to keep an ample supply 

 of all the common types necessary for dissection and for embryo- 

 logical study, such as frogs, salamanders, guinea-pigs, fowls, 

 rabbits, etc., while it is proposed to keep the large aquarium 

 well stocked with the principal fresh-water and marine animals. 

 The proximity of Cambridge to the sea will make it a compar- 

 atively easy task to supply the aquarium not only with the marine 

 animals common on the north of Cape Cod, but also those of its 

 southern shores. I anticipate no difficulty in keeping a supply of 

 marine animals not only for demonstration, but also for original 

 work, hoping thus to do away with much of the desultory work 

 unavoidable for those who pass their summers on the seashore. 

 I do not, of course, propose to replace observation in the field to 

 the original investigator by this means, but I do hope by bringing 

 the larger number of our marine animals within the reach of the 



