62 MASS. EXPERIMENT STATION BULLETIN 398 



412 Studies in Mineral Nutrition of Laying Hens. I. The Manganese Re- 

 quirement. By Marie S. Gutowska and Raymond T. Parkhurst. Poultry 

 Sci. 21 (3):277-287. 1942. 



413 Studies in Mineral Nutrition of Laying Hens. II. Excess of Calcium in 

 the Diet. By Marie S. Gutowska and Raymond T. Parkhurst. Poultry 

 Sci. 21 (4):321-328. 1942. 



415 A Device for Marking Fields on Microscope Slides. By Carl Olson, Jr. 

 Jour. Lab. and Clin. Med. 27 (7):939-940. 1942. 



417 The Significance of Tannic Substances and Theobromine in Chocolate Milk. 

 By William S. Mueller. Jour. Dairy Sci. 25 {3):221-230. 1942. 



418 Experimental Autoecism and Other Biological Studies of a Gall-Forming 

 Peridermium on Northern Hard Pines. By Malcolm A. McKenzie. Phyto- 

 pathology 32 (9) :785-798. 1942. 



419 Report on Zinc. B\- E. B. Holland and VV. S. Ritchie. 

 Assoc. Off. Agr. Chem. Jour. 25 (2):393-394. 1942. 



421 Maintaining Fertility- Levels in Massachusetts Pastures. By \V. G. Colby. 

 Soil Sci. Soc. Amer. Proc. 6 (1941):281-284. 1942. 



422 The Inheritance of Blossom Type and Blossom Size in the Peach. By J. S. 

 Bailey and A. P. French. Amer. Soc. Hort. Sci. Proc. 40:248-250. 1942. 



423 Relative Inhibition of Microorganisms by Glucose and Sucrose Sirups. 

 By L. Tarkow, C. R. Fellers and A. S. Levine. Jour. Bact. 44 (3):367-372. 

 1942. 



424 Further Studies on the Control of Preharvest Drop of Mcintosh. By 

 Lawrence Southwick. Amer. Soc. Hort. Sci. Proc. 40:39-41. 1942. 



425 Further Observations on a Narrow-Leaf Variation of the Apple. By A. P. 

 French and Lawrence Southwick. Amer. Soc. Hort. Sci. Proc. 40:245-247. 

 1942. 



426 Trunk Diameters of Young Apple Trees on Clonal Stocks. By J. K. Shaw. 

 Amer. Soc. Hort. Sci. Proc. 40:269-271. 1942. 



427 An Improved Orange Juice Concentrate. By A. Sedky, C. R. Fellers, and 

 W. B. Esselen, Jr. Fruit. Prod. Jour. 21 (5J:136-138.' 1942. 



428 An Improved Orange Marmalade of High Vitamin C Content. B>' A. Sedky, 

 C. R. Fellers, and W. B. Esselen, Jr. Fruit Prod. Jour. 21 (6):170-172, 

 185, 189. 1942. 



429 The Availability of the Iron of Cocoa and of Iron-Fortified Cocoa Mixtures. 

 By Faye Kinder, W. S. Mueller, and Helen S. Mitchell. Jour. Dairy Sci. 

 25 (5):401-408. 1942. 



430 The Nontoxicity of Levulinic Acid. By R. G. Tischer, C. R. Fellers and 

 B. J. Doyle. Jour. Amer. Pharm. Assoc. Sci. Ed. 31 (7):217-220. 1942. 



431 Tomato Catsup as a Source of Vitamin C. By W. B. Esselen, Jr., and H. 

 Fram. Jour. Home Econ. 34 (9):677-678. 1942. 



432 The Control of Wood Decay. By Malcolm A. McKenzie. Pests and Their 

 Control, March 1942. 



433 Cider-Apple Jelly. By S. G. Davis, C. R. Fellers, and A. S. Levine. Fruit 

 Prod. Jour. 21 (9):260-261, 283. 1942. 



434 Measurement of Texture in Baked-Potato Tissue. By Monroe E. Freeman. 

 Food Res. 7 (6):451-458. 1942. 



435 Geography of New England Soils. By A. B. Beaumont. Econ. Geog. 18 

 (2):203-208. 1942. 



437 Propagation of Garden Sage, Salvia officinalis L., by Cuttings, Especially 

 by Cuttings Taken in Winter. By W. L. Doran and A. M. Davis. Amer. 

 Nurseryman 76 (5):12. 1942. 



