POSTFACE 



This compilation of knowledge concerning the lychee and 

 lungan is western in form but Chinese in spirit. Therefore it 

 does not seem out of place to follow Chinese usage and to attach 

 a postface. This gives the wrker an opportunity to explain some 

 things that would otherwise remain a mystery. 



The original body of the work and five appendices, pages 

 i to 149, were printed on the College Press, Canton Christian 

 College, Canton, China, where it was possible to insert Chinese 

 characters. The work went to press about the time the writer 

 was leaving for an extended trip to Siam, and consequently he 

 had no opportunity to read the proof or to revise the work as it 

 went through the press. Early in 1921 the unbound sheets were 

 sent to the United States. 



There has been considerable advance in the scientific study 

 of the lychee during recent months. Credit is due Dr. Frederick V. 

 Coville for the discovery of mycorhizal fungi growing on the 

 roots of lychee. Dr. Coville's article, well illustrated with draw- 

 ings and microphotographs by Dr. Emil G. Arzberger, suggests 

 the probability that an acid soil is essential for successful culture 

 of the lychee. Chinese methods of propagating the lychee have 

 never been highly satisfactory. Mr. Edward Goucher has finally 

 worked out a most unusual process for rooting lychee cuttings 

 that may not only revolutionize lychee propagation, but also 

 that of other sub-tropical and tropical plants. Acknowledgment 

 is due Mr. Goucher for his experiments and his explanation of 

 the process as worked out with the lychee. Mr. Walter T. 

 Swingle's statement of his observations on the Lack of Winter 

 Dormancy and Low Zero Point of Growth of the Lychee 

 should prove helpful in the culture of the lychee in Florida. 

 Mr. Swingle also suggests the possibilities of the lychee as 

 an attractive greenhouse plant. This is also the conviction 

 of a number of observers who have seen the lychee in its 

 native home. 



Mr. Michael J. Hagerty's clear translation, recording the 



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