836 EXPERIMENT STATION RECORD. [Vol. 43 



suits are given of a joint survey conducted by tlie New Jersey Bureau of 

 Markets and of Statistics and Inspection. The data given for boLi tlie apple 

 and peach show the location of the producing districts, the number of bearing 

 iind nonbearing trees, and the varieties and ages of bearing and nonbearing 

 trees. Summarized data relative to the apple and peach industries in the 

 United States as a whole and in the principal producing States of the East are 

 also included. 



An introductory discussion is given by A. L. Clark on Commercial Peach and 

 Apple Plantings in New Jersey and Their Relation to the Future Market Supply. 



A peach-sizing machine, M. Stockton and J. F. Barghausen ([/. S. Dept. 

 Agr. Bui. 86^ {1920), pp. 6, figs. 6)> — A contribution from the Bureau of Markets 

 describing a peach-sizing machine, patented by the junior author, free use of 

 which is dedicated to the people of the United States. 



The machine was developed to meet a demand from peach growers for a 

 simple and efficient machine that would accurately and carefully size and dis- 

 tribute peaches to the packing bin. Its construction and operation is illustrated 

 and described. 



The packing of fruit, W. J. Allen and W. le G. Brereton (Dept. Agr. N. S. 

 Wales, Farmers' Bui. ISO {1920), pp. 46, figs. 50).— This bulletin discusses the 

 grading and packing of deciduous and citrus fruits, with special reference to 

 conditions in Australia. 



The effect of cloudiness [on submerged cranberry plants], H. F. Bergman 

 (Ann. Rpt. Cape Cod Cranberry Growers' Assoc., 32 {1919-20), pp. 19-30, figs. 

 3). — A contribution from the Bureau of Plant Industry of the U. S. Department 

 of Agi'iculture giving the results of an investigation of serious injury to cran- 

 berry plants, after flooding with water on the State experimental bog at East 

 Wareham, Mass. 



The author found that injury is most apt to occur to the plants by flooding 

 the bog during a period of cloudy weather, the amount of light being the most 

 important factor among weather conditions affecting the process of photo- 

 synthesis. Cloudiness or dark water greatly decreases the oxygen content of 

 the water. The effect of cloudiness is less noticeable when the bog water is 

 clear. All other factors remaining the same, injury from flooding may increase 

 during a period of warm weather, since the rate of respiration of the su"bmerged 

 plants increases and they require more oxygen. Flowers and growing tips are 

 more seriously injured than old shoots, since their rate of carbon dioxid pro- 

 duction and consequently their oxygen requirement are higher. 



The renewal of old strawberry plantations, J. Blanchouin {Jardin, 24 

 {1920), No. 757, p. 110). — For certain varieties that stool out freely, the author 

 recommends the reduction of the number of hearts in the early fall, previous 

 to fertilizing the plants. The remaining hearts, it is claimed, produce much 

 better fruit the following spring. 



A discussion of three types of the Smyrna fig, I. J. Condit {Fig and Olive 

 Jour., 5 {1920), No. 3, p. 5, fig. 1). — The author describes three types of Smyrna 

 figs recently observed in certain nurseries and young fig orchards. 



Investigations on the root growth of grape stocks, K. Kroemeb {Landw. 

 Jahrb., 51 {1917), pp. 673-729, pis. 2).— A biological study of root formation and 

 development in grape seedlings, cuttings, and older stocks, including a review of 

 literature dealing with root growth in grapes and other plants. 



Marketing eastern grapes, D. Axleman {U. S. Dept. Agr. Bui. 861 {1920), 

 pp. 61, figs. 3). — A contribution fi-om the Bureau of Markets, discussing the 

 history of varietal development, the rise and fall of commercial production, 

 changes in market outlets, commercial varieties, methods of preparation for 



