1917] CONTENTS. XXIII 



Page. 



Morrison, H., Nearctic Hymenoptera of the Genus Bracon 360 



Mundell, J. E., and Smith, H. G., Dry Farmino; in Eastern New Mexico 328 



Munger, T. T., Problem of Making Volume Tables for Use on National Forests. . 450 



Murphy, L. S., Seeding Habits of Spruce in Competition with Its Associates. . 45 

 Myers, P. R., An American Species of the Hymenopterous Genus Wesmaslia 



of Foerster 855 



Nelson, E. K., Gingerol and Paradol 612 



Oakleaf, H. B., Douglas P'ir Shipbuilding 452 



Oberholser, H. C, Description of a New Genus of Anatidse 758 



Oberholser, H. C, Description of a New Sialia from Mexico 846 



Oberholser, H. C, Diagnosis of a New Laniine Family of Passeriformes 846 



Oberholser, H. C, Mutanda Ornithologica, I, II 758 



Obst, Maud M., Bile Compared with Lactose Bouillon for Determining Bacil- 

 lus coli 188 



Page, L. W., Policy and Program in Road Construction under the Federal Aid 



Law 89 



Palmer, T. S., Deer Flat National Bird Reservation, Idaho 355 



Patten, H. E., and Mains, G. H., Apparatus for the Purification of Mercury. . . 503 

 Patten, H. E., and Mains, G. H., Carbonation Studies. — I, A Mechanical Stirrer 



for Carbonation Direct in the Bottle 716 



Pemberton, C. E., and Willard, H. F., Parasitism of the Larvae of the Mediter- 

 ranean Fruit Fly in Hawaii during 1916 856 



Pennington, Mary E., Hepburn, J. S., St. John, E. Q., and Witmer, E., Influ- 

 ence of Temperatures Above Freezing on Flesh of Fowl 62 



Pennington, Mary E., Hepburn, J. S., St. John, E. Q., and Witmer, E., Influ- 

 ence of Temperatures Below Freezing on Flesh of Fowl 62 



Phelps, I. K., and Palmer, H. E., Estimation of Butyric Acid in Biological 



Products, 1 206 



Phillips, E. F., Outdoor Wintering [of Bees] 360 



Phillips, E. F., Results of Apiary Inspection 263 



Phillips, W. J., Report on Isosoma Investigations 263 



Pieper, E. J., Acree, S. F., and Humphrey, C. J., Chemical Composition of the 



Higher Fractions of Maple-wood Creosote 502 



Pieper, E. J., Acree, S. F., and Humphrey, C. J., Toxicity to a Wood-destroying 

 Fungus of Maple-wood Creosote and of Some of Its Constituents and Deriva- 

 tives, together with a Comparison with Beech wood Creosote 502 



Pierce, W. D., Notes on a Southern Trip 560 



Pierce, W. D., Studies of Weevils with Descriptions of New Genera and Species. 58 



Piper, C. v., Grasses in Relation to Dry Farming 437 



Piper, C. v., and Oakley, R. A., Turf for Golf Courses 146 



Pittier, H., New or Noteworthy Plants from Colombia and Central America, VI . 819 



Pittier, H., The Middle American Species of Lonchocarpus 819 



Popenoe, W., The Avocado in Florida and Other Lands 144 



Pritchard, F. J., Morphological Characters and Saccharin Content of Sugar 



Beets 28 



Pritchard, F. J., Recent Investigations in Sugar-beet Breeding 442 



Ransom, B. H., Parasites of Food Animals Transmissible to Man 355 



Ransom, B. H., and Hall, M. C, Further Note on the Life History of Gongy- 



lonema scutatum 577 



Reed, W. G., The Coefficient of Correlation 621 



Reeve, C. S., and Lewis, R. H., Effects of Exposure on Some Fluid Bitumens. 711 



Reeves, G. I., The Alfalfa Weevil Investigation 262 



Ricker, P. L., A Valuable Unpublished Work on Pomology 41 



Ricker, P. L., New Names in Amygdalus 220 



