Alphabetical Index. 



145 



Ward, Lester F., Mesozoic Flora of Por 

 tugal compared with that of United 

 States, xii. 



, Kemarks on the genus Caulinites 

 Brongn., xv. 

 Wasps, 19, 47, 48, 53, 54. 

 Life history of, 21. 

 Paper, 20. 

 Social, 19-23. 

 Wax discs, 16. 

 glands, 12. 

 pincers, 13. 



producing organs in bees, 12, 67-68. 

 Webber, H. J., Dissemination of the 



Yucca, x. 



Weismann's theory of heredity, 51-52. 

 Woods, A. F., Calorific Effect of Light 

 upon Plants, ix. 



Woods, A. F., Some Effects of -Spraying 

 Mixtures on growth of Plants, x. 



X. 



Xiphosura, 93. 



Y. 



Yellow jackets, 20. 



Z. 



Zamites bucklandi, 81. 



megalophyllus, 79. 



microphyllus, 80. 



pygmseus, 80. 

 Zamiostrobus emmonsi, 86. 



mirabilis, 75, 86. 

 Zapus hudsonius, 99, 100. 



