93 



returned to tlie shipper. Potato scab is found in the Islands and 

 much depends on the individual grower to prevent his potato crop 

 from being ruined by this disease. All potatoes used for seed 

 should be free from any scab and should be treated before plant- 

 ing. The best treatment is to immerse the seed potatoes for two 

 hours in a solution of 8 ounce's formaldehyde to 15 gallons of 

 water and then let the potatoes be spread out to dry before plant- 

 ing. If possible potatoes should not be planted on the same 

 ground which grew a potato crop the previous year, es])ecially 

 if the crop showed any sign of potato scab. 



POTATOES AFFFXTED WITH NEMATODES OR 

 EELWORALS. 



The nematode or eel worm has been in the Islands for some 

 time. Many of the tender roots of vegetables and flowering 

 plants show the tuber-like swellings and soon perish. This pest 

 is getting Well started on the Coast and especial damage is noted 

 to potatoes. Recently a shipment from San Francisco was re- 

 turned on account of being badly infested. The nematode or eel- 

 worm occupies the outer layer of the potato to a depth of about 

 one-quarter of an inch. When present in large numbers in the 

 potato, the surface is more or less covered with small elevations 

 or pimples, which contain many eelworms and a tuber could con- 

 tain a great many thousand of these worms. 



The serious side of this infestation arises through the distribu- 

 tion of the diseased potatoes and the use of these especially as 

 seed for new crops. All those interested in the growing of pota- 

 toes in these Islands should use every care not to buy either 

 scabby potatoes or those infested with eehvorms. The Division 

 of Plant Inspection will gladly examine samples of seed potatoes 

 for the grower and advise him as to the best methods for dis- 

 infection. 



Book Review 



Hawaii Nei 128 Years Ago, by Archibald Menzies, has re- 

 cently been attractively published by Mr. W. F. Wilson of Hono- 

 lulu, who last year also made available to the public an account 

 of David Douglas' visits to Hawaii. The volume of some 200 

 pages, profusely illustrated, presents the journal of Archibald 

 Alenzies on his three visits to these islands in the years 1792 to 

 1794 while he was acting as surgeon and naturalist on board H. 

 M. S. Discovery under Captain Vancouver. ^lenzies had been 

 here twice before. 



