A IpJiahetical Index. 



]4n 



Wiird, Lester F.,Mesozoic Flin'a of Por- 

 tngal compared with that of United 

 States, xii. 



, Remarks on the genus Cauli'nites 



Brongn-, xv. 

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

 Life history of, 21. 

 Paper, 20. 

 Social, 19-28. 

 Wax discs, 16. 



glands, 12. 

 pincers, 18. 



producing organs in bees, 12, fiJ-GS. 

 Webber, H. J., Dissemination of the 



Yucca, X. 

 Weismann's theory of heredity, 51-52. 

 AVoods, A. F., Uaioridc Effect of Light 

 ui)on Plants, ix. 



Woods, A. F., Some Ellccts of Sprayini. 

 ]Mixtures on growth of Plants, x. 



Xiphosura, 93. 



Yellow jackets, 20. 



Zamites bucklandi, 81. 



megalophyllus, 79. 



microphyllus, 80. 



pygmteus, 80. 

 Zamiostrobus emmonsi, 86. 



mirabilis, 75, 86. 

 Zapus hudsonius, 99, 100. 



