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THE XATIOXAL GEOGRAPHIC MAGAZINE 



1 



EXAMINING PLANT IMMIGRANTS TO SEE WHETHER THEY ARE HEALTHY 



More than 10,000 naturalized plant citizens of the United States have been brought from 

 every quarter of the world by plant explorers of the Department of Agriculture. All of 

 these plants, as well as commercial importations, are carefully examined for injurious insects 

 and plant diseases. If necessary, such plants are disinfected by fumigation, or destroyed if 

 fumigation cannot be relied upon to eliminate any accompanying pests. 



A SEARCH FOR EUNGI AND INSECTS AT A HORTICULTURAL ELLIS ISLAND 



These lilies-of-the-valley roots may neither toil nor spin, but they require patient work 

 on the part of experts from the Office of Plant Introduction to prevent the admission to the 

 United States of undesirable parasites. 



