18 HORTICULTURE [Bot. Absts., Vol. VI, 



and Tragedy, the fruit may mature regardless of complete seed development. — (9) For the 

 varieties tested, there is no direct relation between the variety of pollen used and the ratio 

 which exists between plump or well developed seeds and matured fruits. The ratio is fairly 

 constant for the variety, regardless of the kind of pollen applied. — (10) There is evidently no 

 relation existing between the degree of fruitfulness of reciprocal crosses. — (11) The results 

 obtained indicate that the results are the same whether the varieties of a given species are 

 closely related or non-related. — (12) The species of P. domestica and P. triflora may be con- 

 sidered inter-sterile for all practical purposes. — E. C. Auchter. 



130. Mathieu, E. The oil palm in the East. Gardens' Bull. Straits Settlements 2: 217- 

 230. 2 jig. 1920. — A discussion on the cultivation of Elaeis guineensis in the East. — T. F. 



Chipp. 



131. Milsum, J. N. Fruit culture in Malaya. Dept. Agric. Federated Malay States Bull. 

 29. 108 p., 33 pi. 1919. — Describes what fruits can be grown and their treatment. — T. F. 

 Chipp. 



132. Newell, Wilmon, and Frank Stirling. Statistics on citrus plantings in Florida. 

 Florida State Plant Bd. Quart. Bull. 3: 113-116. 1919. — The data were accumulated in con- 

 nection with the work of eradicating citrus canker and represent complete and up-to-date 

 information on the subject. The data show that the total acreage devoted to the citrus groves 

 in the state is 160,397, of which 115,324 acres are of bearing age and 45,073 are non-bearing. A 

 comparison is made with the acreage in California which shows that the latter state has only 

 a little over 12,000 acres more of orange and grapefruit groves; to this should be added 48,000 

 acres of lemon plantings in California while the acreage devoted to lemons 'n Florida is neg- 

 ligible— C. D. Sherbakoff. 



133. Pirotta, R. Osservazioni sul flore dell'olivo. [Olive flowers.] Atti R. Accad. 

 Lincei [Roma] Rend. (CI. Sci. Fis. Mat. e Nat.) 28 2 : 1-9. 1919. — Examinations were made 

 of flowers of the common olive (Olea europaea L.), which showed that the flowers might be 

 divided into three classes: monoclinous, clearly staminiferous, and physiologically stami- 

 niferous. They may be on the same or different individuals. In this respect the olive behaves 

 like the wild, closely related Phillyrea. The aspect of the trees with these different types of 

 flowers is described. — F. M. Blodgett. 



134. Sasscer, E. R. Important foreign pests collected on imported nursery stock in 1919. 

 Jour. Econ. Entomol. 13: 181-184. 1920. — Paper presented to the Section of Horticultural 

 Inspection at the thirty-second annual meeting of the Amer. Assoc. Econ. Entomol., January, 

 1920.— A. B. Massey. 



135. Spring, F. G., and J. N. Milsum. Food production in Malaya. Dept. Agric. Fed- 

 erated Malay States Bull. 30. 112 p., 12 pi. 1919. — The principles of cultivation of the 

 different food crops of Malaya are considered from the point of view of increasing the food 

 supply of the country. — T. F. Chipp. 



136. Stark, Major Lloyd C. French orchards and nurseries after the war. Nation. 

 Nurseryman 28 1 : 6-8. Jan., 1920. — There are no large commercial orchards in France com- 

 parable to those in America, but a large amount of fruit is produced from the smaller orchards 

 and fruit gardens. Grapes, on the other hand, are grown on a gigantic scale, being supported 

 by the wine industry. — Apples and pears are usually dwarfs and they are pruned in cordons, 

 espaliers, and in every conceivable design and fashion. In Normandy the best orchards are 

 grown, and the land is best adapted to the apple. — Most orchards are grown in sod and the 

 trees are pruned to a flat, umbrella-shaped head in most instances. No variety of apple 

 seems to be generally grown in France, but each locality has its own favorite. — The pear 

 industry is much more important there than in America and the blight gives little or no 

 trouble. The Bartlett, grown under the name of "English William" is the most popular 



