THE BROOKLYN MUSEUM 



A special exhibit of birds' eggs in the floor case at this 

 corner of the hall emphasizes the more important facts to 

 be discovered from a study of birds' eggs, such as the varia- 

 tion in size, color, markings, number of eggs in a clutch and 

 relation between size of bird and egg. The egg of the 

 ^pyornis, the large extinct bird related to the ostrich, is 

 shown. This exhibit is intended to be studied in connection 

 with the exhibits of eggs of North American birds shown in 

 the series of cases in this hall. 



One of the most interesting exhibits in the Museum faces 

 the visitor at the right (northeast) corner of the hall and 

 illustrates the mechanism of flight in animals and the differ- 

 entiation between gliding and flight proper. Skeletons of 

 fore limbs, showing modifications for flight, deviation from 

 the generalized type and relations to the human arm, in- 

 clude those of monkeys, opossum, bat, ostrich, pterodactyl 

 or flying reptile and the reptile-like bird Archceopteryx. 



To the left, some examples of reversion to type, as shown 

 by the domestic fowl, may be properly compared with the 

 exhibit in Room 5, illustrating Variation under Domestica- 

 tion. 



Proceeding up the north side of the hall, a large group of 

 Rocky Mountain goats, comprising the old male, two 

 females and two young, is exhibited in the next floor case. 

 This so-called goat is an antelope related to the Asiatic 

 goat-antelope, inhabiting almost inaccessible slopes of high 

 mountains. 



Specimens of the eastern moose, the largest existing 



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