in prehistoric time, when lie was first differentiated 

 stock, he, wherever existing, was given over to ii 

 miscuity; that this was soon followed in many ic^i 

 form of polygamy, and polyandry where wonicii w vw 

 as promiscuity disappeared, and polygamy hc-canic f; ■ 

 lent, some mode of monogamy ap|)earc(l. and this, a' 

 time is the form of marriage adopted In iicaily all ci 

 In other words these various customs havi' sliailcd iiif 

 — that is, in the main, promiscuity for ilic wild, pivlii^ 

 followed l)y polygamy for ancient times, with moi 



polygamy now o])enly followed in the I'nited State" 

 of the lowest existing races of the world are moiiogamc 



These facts are thus briefly ])fesent('(l in that we i- 

 them with what occurs in the . lass of hirds. TIkv 

 one way, the lowest form, of exi^iiiii; l.inU dio, 

 mating be given over to pronn'scuity ; iIiom' higher 

 should be polygamous; and, hnally the mo-t ■ 

 as the Passeres, be monogamous. 'This. ho\ 



while other, perhap., atv pn.mi>cn..u. .no l.inU 

 androus); atid .till oiIht. afroidiui: rxamplc. of 

 it Ls too, higher n,. in tl.r ..aic. jiim a. il i., a. l.rfo, 

 with the human spec io. 



Tracing birds back thronuh ucolonic time a. boi 

 means of the niaI<Tial at hand thei'c i> no ()Mf>tioii 



families of birds from vai'ions parts of (he world f\l 



