Nov.imT SHIRJ.r— CITRUS TRIFOLTATA IN JAPAN. 197 



(4) Letter from Akita Agricultural School. 



" the trifoliate orange thrives very well throughout the 



entire region of Akita-prefecture, and especially well in Kado- 

 date in Senhoku district. There it attains to the height of 12 

 feet and the diameter at breast height measures 7.5 inches " 



(5) Letter from Dr. Yamada in Morioka Higher Agricul- 

 tural and Forestry School. 



" Dear Sir : 



I am very glad to hear that you are in good health. I 

 have recieved your letter of 12 inst. concerning the trifoliata 

 orange and is very pleased to answer you that here in the city 

 of Morioka, the trifoliata orange is used as hedges and is 

 constantly pruned and cut short so that the tree does not 

 exceed four or five feet in height." 



(6) Letter from Dr. Matsuoka, in Iwate Agricultural 

 School to Dr. Hara in Agricultural College, Imperial 

 University, Tokyo. 



" in the city of Morioka and its vicinity Citrus trifoliata is 



used as hedges. We see this tree planted here and there in 

 Fukuoka village in Ninohe district, about 30 miles north of 

 Morioka. I have also heard that at Hachinohe in Aomori-prefec- 

 turc, there lives a nursery man who sells young plants " 



(7) Letter from Agricultural Experiment Station at Miyagi- 

 prefecturc. 



" I have received your letter of 27th Sept. concerning the 

 northern limit of the distribution of Citrus trifoliata in due 

 time. Throughout Miyagi-prcfecture the trifoliata orange 

 thrives very well. Here it is used as hedges around the fruit 

 gardens, dwelling house9, etc. Without any protection it grows 

 very well and in some places it is found in semi-wild condition." 



(8) Letter from Yama^ata Agricultural Experiment Station. 

 "I have received your's of 27th Sept. inquiring the northern 



limit of the distribution of Citrus trifoliata. Here the citrus in 

 question is very abundant and is used as hedges etc. [tflowers 

 and herns fruit as usual and produces perfect seeds." 



(i)j Letter from Kamo Agricultural and Forestry School in 

 Niigata-prefecture. 



