On the Classification of Cultivated Rice. 
BY 
S. Kikkawa. 
College of Agriculture, Komaba, Tokyo. 
With Plates V—VIII. 
Several scientists have hitherto tried to classify rice. Among them 
we may mention BRETSCHNEIDER, ROXBURGH, GRIFFITH, LOULEIRO, 
Hevze, Sıro and Inasvu. But the classifications by these authors are 
either very simple or incomplete, mostly perhaps in consequence of the 
lack of samples at their disposal. 
In 1884 Yosuro Tanaxa made a classification of Japanese rice, taking 
in consideration the characters of the grain. This classification is much 
more reasonable and perfect than those by the above mentioned authors. 
_ F. KernicHhe in his work: “Die Arten und Varieteten des 
Getreides” mentioned a far more perfect classification of rice.t He ob- 
tained a good many samples from several countries but his classification 
too is based solely on the standpoint of the grain. To this classification 
I. Iyacaxt proposed some additions in 1894.? 
Sir GEORGE Warr,to whom the writer is much indebted for help and 
advice during the compilation of this work, examined more than four 
thousand samples of Bengal rice on the occasion of the international ex- 
hibition in Calcutta. In the Dictionary of Economic Products of India 
he gives three varieties of wild rice, viz: rufipogon, bengalensis and abuen- 
sis, but in dealing with the cultivated plants he ranges them first according 
to the localities of production and then subdivides each group according 
to the season of cultivation. 
1. Handbuch des Getreide. Band I: Die Arten und Varietäten des Getreides. 
S. 232-234. 
2. INAGAKI: Researches on the rice-plant. 
3. Dictionary of Economic Products of India Vol. V. p. 504 and 530-533. 
