NOTES AND ABSTRACTS . 



265 



S'08 per cent, glycerine. It has a considerable commercial value, and 

 may be used for cooking. 



(D) Eesin from " Bror " from the Pelew Island " Korror." The 

 resin from the tree called Bror is well adapted for the preparation of 

 varnish or furniture polish. 



Listrostachys B eJinickiana is an improved L. pellucida, with large 

 flowers, pure white inside. — S. E. W. 



Phosphatic Manures. By C. G. Hopkins (U.S.A. Exp. Stn. 

 Illinois, Circ. 127; Jan. 1909). — The author shows that finely ground 

 rock phosphate (' ' floats ' ') has in Illinois and other States given results 

 as good as (and when cost is taken into consideration, better than) 

 those obtained through the use of acid phosphate (superphosphate) 

 when the manure has been used with a sufficient amount of organic 

 matter in the soil and the results computed over a series of years. In 

 the case of the return from a crop in the first year only, the super- 

 phosphate gave the better results. 



A warning is uttered rega.rding the continued export of phosphatic 

 rock, which is now proceeding at the rate of over a million tons per 

 annum, worth at the mine about £1,250,000. The future of American 

 agriculture depends largely on the supply of phosphatic manures, and 

 the danger of trusts and unhmited export is emphasized. — F. J. C. 



Pineapple Growingr in Porto Rico. By H. C. Hemicksen and 

 M. J. Jones [U.S.A. Exp. Stn. Porto Rico, Bull. 8, April 1909; 

 plates). — The pineapple has certain well-defined likes and dislikes, 

 and every part of the island of Porto Eico does not possess a soil which 

 is equally suited to its cultivation. The plant will sometimes thrive, 

 however, in theoretically unsuitable localities, so that no one should 

 hesitate to attempt its growth in any part of the island so long as he 

 is willing to pay proper attention to its after-management. It is impor- 

 tant to avoid importing infected stock, as has been done so often in the 

 past, to the danger of the whole industry in Porto Eico, and the planter 

 should also always be prepared to fight the various diseases and pests 

 to which the plants are liable. 



This bulletin gives an illustrated account of the pineapple, describes 

 its varieties and methods of cultivation, and gives advice on the treat- 

 ment of diseases, on fertilization, and on the industry from the com- 

 mercial point of view. — M. L. H. 



.Pine, New Disease. By E. Miinch and C. v. Tubeuf {Nat. Zeit. 

 Land-Forst. viii. pp. 39-44; Jan. 1910). — Year-old needles of Scots 

 Pine were found to be partially brown. This was traced to the action 

 of a parasitic fungus, hitherto unrecorded; it is named Hendersonia 

 acicola and belongs to the Sphaeropsideae, a group of the ' Fungi 

 Imperfecta —PF. G. S. 



Pomologrical Statistics {La Pom. Frang., January 1910).— 

 Printed form to collect information as to varieties of fruit: (1) Most 



