CONTENTS. 



•^^ 



X Introductory 



II. General notes 



III. Horticultural conditions in Japan 



IV. How the San Jose Scale was introduced into Japan 

 Y. How the San Jose Scale was spread in Japan 



VI. Distribution and present status of the San Jose Scale in Japan. 



VII. Epoch of exportation of Japanese vegetation 



VIII. Absence of the scale in high and uncultivated regions 



IX. Climatic conditions and distribution of the San Jose Scale... 



X. The food plants of the San Jose Scale in Japan 



XI. Two natural enemies of the scale 



XII. Variation in the species of the scale 



XIII. Control of the San Jose Scale in Japan 



XIV. Conclusions 



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