I N 1 ) h: X 



Actinocephalus oligncanthtis (illus.), 

 216. 



Adaptation, 56, 327; categories of, 

 328. 



Aid, mutual, 369. 



Allen, J. A., 136, 206. 



Altmann, theory of protoplasmic 

 structure, 250. 



Amaryllids, sports of (illus.), 103. 



Arnblystoma opacum (illus.), 20. 



Amitosis, 252. 



Amoeba eating one-celled plant 

 (illus.), 31; moving (illus.), 30; 

 "polypodia, stages of fi.ssion 

 (illus.), 31; reproduction of, 

 213; (illus.), 214. 



Amphimixis, 154. 



Analogy, between variations in 

 species and in languages, 325; 

 defined, 173; in wings of ani- 

 mals, (illus.), 173. 



Anaphase, defined, 256. 



Andrena, nest of (illus.), 3S4. 



Andricus caJijornicua, galls pro- 

 duced by (illus.), 342. 



Anemone, sea, with algie in body 

 wall (illus.), 377. 



Anosia plexippus and its mimic 

 (illus.), 422; metamorphosis of 

 (illus.), 235. 



Antlion, larv-a, excavating pit 

 (illus.), 330. 



Ants, castes of (illus), 3<)1; com- 

 mensal life with aphids, 374; 

 communal life of, 301; nest of 

 (illus). 392; (illus.), 393; .scM-ial 

 parasitism of, 375; .symbiosis 

 with plants, 377. 



Apes, anthropoid. rl.'i.s.siti( .lUon of, 



451; cars of (ilhis. i, 171. 

 A[)hi<ls. rommens^il life \\ith Mi.t"- 



374. 

 Appendix vcnnifonni.s, of kanpnrfKi 



and man fillu.s. \. 179. 

 Ai)j)l('. hybridiz«'<l mo.sair Cillii.s.>. 



101; .'Seedlings f)f tin* Willianuc 



lOarly (iliu.-^. ). 102. 

 A(juiln rltrysiitlns (illu.s.), 4 1. 

 Arbdcin, e\(ra-ovat<>s of (illus. .. jsl • 



riridis, regeneration in (ill . 



282. 

 Arcfuroptcryx litfitHjrapftica (illu.H. ), 



302. 

 Ascaris incgahtrephala, sp» • 



genesis of (illus.), 264; ^ m 



265; (illu.s.). 271; var. :. . 



valens, cell divi^iion in (illu- . 



258. 

 Ascidian (illus.). 42; (ilhm.), 3tU. 

 Asters, defintnl, 254. 

 Atavism, 1<»(). 

 Australia, rabbit and other p! i;: ;• - 



of, (>5. 

 Aythyn, f;iinily of Villus. \ 14.1. 



liani.'icle (illus), 365; nirlamor- 



phosis of (illus.), 234 

 Harriers, gt'ogniphic, 316; intluencrti 



of g«'ogniphie, l'2S. 

 linsrnnion cntistrictor (illu-H *, 43. 

 liasilarcliia arrhippu», uxhw'uWn^ 



Annain (illu.s.), 422. 

 Hati-s. 11 W. 402. 

 Hateson. Win.. 141. 147. 14S. 192. 

 lilt tick, wingh^jw (ilhm \ 351. 

 Beavers making \\v»X^ (iUu0.), 4J7. 



ATI 



