INDEX. 



Abbe's diffraction plates 323 



Abel, O. 706 



Abonyi, A. 127 



Aeantharia, spicules of 458 



Acanthometridae 462 



Acceleration 64 



Aceratherium 761 



Achlya 244 



Acromegaly 135 



Actinomma 469 



Actinomyxidia 452 



Actinophrys 165, 197, 264, 298 



Actinosphaerium 197, 266, 298, 468 



Adams, J. C. 663 



Adaptation 670 



Addison, Joseph, 671 



Adiantum 408 



Adsorption 192, 208, 241. 277, 357; 



orientirte 440, 590; pseudo 282 

 Agglutination 201 

 Aglaophenia 748 

 Airy, H. 636 

 Albumin molecule 41 

 Alcyqnaria 387, 413, 424, 459 

 Alexeieff, A. 157, 165 

 AUmann, W. 643 

 Alpheus, claws of 150 

 Alpine plants 124 

 Altmann's granules 285 

 Alveolar meshwork 170 

 Ammonites 526, 530, 537, 539, 550, 



552, 576, 583, 584, 728 

 Amoeba 12, 165, 209, 212, 245, 255, 



288. 463, 605 

 Amphidiscs 440 

 Amphioxus 311 

 Ampullaria 560 

 Anabaena 300 

 Anaxagoras 8 

 Ancvloceras 550 



Andxews, G. F. 164; C. W. 716 

 Anhydrite 433 

 Anikin, W. P. 130 

 Anisonema 126 

 Anisotropy 241, 357 

 Anomia 565, 567 

 Antelopes, horns of 614, 671 

 Antheridia 303, 403, 405, 409 



Anthoceros, spore of 397 



Anthogorgia, spicules of 413 



Anthropometry 51 



Antichne 360' 



Antigonia 750, 775 



Antlers 628 



Apatornis 757 



Apocynum, pollen of 396 



Aptychus 576 



Arachnoidiscus 387 



Arachnophyllum 325 



Arcella 323 



Arcestes 539, 540 



Archaeopteryx 757 



Archimedes 580; spiral of 503, 524, 



552 

 Argali, horns of 617 

 Argiope 561 

 Argonauta 546, 561 

 Argus jjheasant 431, 631 

 Argyropelecus 748 

 Aristotle 3, 4, 5, 8, 15, 138, 149, 158, 



509, 653, 714, 725, 726 

 Arizona trees 121 

 Arrhenius, Sv. 28, 48, 171 

 Artemia 127 

 Artemis 561 



Ascaris megalocephala 180, 195 

 Aschemonella 255 

 Assheton, R. 344 

 Asterina 342 

 Asteroides 423 

 Asterolampra 386 

 Asters 167, 174 

 Asthenosoma 664 

 Astrorhiza 255, 463, 587, 607 

 Astrosclera 436 

 Asymmetric substances 416 

 Asymmetry 241 

 Atrypa 569 

 Auerbach, F. 9 

 Aulacantha 460 

 Aulastrum 471 

 Aulonia 468 

 Auricular height 93 

 Autocatalysis 131 

 Auximones 135 

 Awerinzew, S. 589 



