ACORNS OF QUERCUS INSIGNIS. 



They are photographed (natural size) with acorns of Q. coccinea, the Scarlet Oak of the Eastern 

 United States, for comparison. Quercus insignis is a white oak found on the slopes ot 

 Mount Orizaba, in southern Mexico, and probably produces larger nuts than any other 

 oak in the world. It offers interesting possibihties of introduction to other tropical regions, 

 and also breeders in more temperate climates. The material from which this photograph 

 was made was kindly sent by Dr. C. A. Purpus, Zacuapan, Huatusco, Vera Cruz, Mexio. 

 (Fig- 12.) 407 



