134 



Yos. 40 and 6-^ yielded more than the average in 1916 and 

 1917, but less than the average in 1918 : 



Nos. 78 and 98 yielded more than the average in 1916, but not 

 afterwards. Because they seem to have good keeping qualities 

 they have been retained for further cultivation, and especially to 

 observe their behaviour comparatively in store. Xo. 56 also ap- 

 pears to have keeping qualities ; but its yield has never yet exceeded 

 the average yield. Xo. 94 has been kept for a little further study 

 as the best in yield of the yams received from Guam island. 



Finally as not yet studied adequately the following have been 

 kept : — 



Those marked with an asterisk above are being growu apart 

 from the rest, for it has not been possible to bring them into the 

 same series with the main crop, as the season at which they were re- 

 ceived and planted in no way corresponded with the seasons kept 

 by the main crop. They are said to be from wild plants. Those 

 marked with a dagger are also being grown apart, as for various 

 reasons they were planted two months earlier than the main crop. 



Upgrowing Yams. The races of the upgrowing yams are few;, 

 and five are being retained in cultivation. It is believed that the 

 Gardens numbers 38 and 72 scarcely differ; and of them No. 72 is 

 being kept. Both yield more than the Xos. 28, 32 and 34. Xum- 

 ber 28 yields the least of all five : and it is transitional towards the 

 branched yams of the normal type. Number 32 and 34 are ^■ery 

 similar to each other, the second however yielding rather more than 

 the former. 



All upgrowing yam.< appear to be good talile yams; and all 

 have magenta sap in tlie tissues. 



