1919] CONTENTS. XXIII 



Page. 

 Sliippen, L. P., Toxin Formation by a Variety of B. botulinus when Culti- 

 vated Aerobically under Various Conditions : Its Possible Production 



in the Animal Body 169 



Shradez-, J. H., Tiie Manufacture of Tomato Paste 618 



Skinner, J. J., and C. F. Noll, Botanical Composition of a Pennanent Pas- 

 ture as Influenced by Fertilizers of Different Compositions 322 



Smith, A. G., and O. O. Camp, Some Experiments on Sand Hill Land; 



Tillage, Fertilizer, and Crop Adaptation 813 



Smith, E. F., The Relations of Crown Gall to Other Overgrowths in 



Plants 152 



Smith, R. C, Ear Worm Injuries to Corn and Resulting Losses 665 



Smith, R. S., Observations on the Pasteurization and Subsequent Han- 

 dling of Millv in City Mills Plants 775 



Smulyan, M. T., Some Observations on the Webbing Clothes Moth 



{Tineola hiselUella) ^ 757 



Snyder, T. E., and R. C. Shannon, Notes on the Insect Fauna of Bank 



Swallows' Nests in Virginia 56 



Snyder, T. E., Some Significant Structural Modifications in Nearctic 



Termites 64 



Sparhawk, W. N., How Can the Private Forest Lands Be Brought under 



Forest Management? 243 



Spaulding, P., Scientific Research and Field Investigations in 1918 351 



Speare, A. T., The Fungus Parasite of the Periodical Cicada 456 



Steinkoenig, L. A., Relation of Fluorin in Soils, Plants, and Animals 126 



Stockberger, W. W., Commercial Drug Grov\'ing in the United States in 



1918 837 



Stocking, W. A., W. E. Ayres, R. C. Potts, and H. F. Meyer, Country 

 Milk Stations, Function, Organization, Operation, Construction, and 



Equipment 184 



Sturtevant, A. P., A Source of Confusion in the Diagnosis of Nosema 



apis in Adult Bees 667 



Swingle, W. T., Merrillia, A New Rutaceous Genus of the Tribe Citrese 



fi'om the Malay Peninsula 432 



Talman, C. F., Everyday Mistakes about the Weather 810 



Tanaka, T., New Japanese Fungi : Notes and Translations, IV 746 



Taylor, G. B., The Sterilization of Dairy Utensils on the Farm and a 



Demonstration of a New Steam Sterilizer 372 



Taylor, G. B., The Importance of Clean Utensils in CeJan Milk Pro- 

 duction 774 



Taylor, G. B., Report on Questionnaire to Health Officei*s Concerning 



Control of the Milk Supply 776 



Teesdale, C. H., Results of Long-time Tests of Creosote Treated Fence 



Posts _ 585 



Teesdale, C. H., and S. W. Allen, Rainfall Influe&ce on Durability of Zinc- 

 treated Crossties 690 



Teesdale, C. IL, and J. D. MacLean, Progress Reported on Wood-block 



Experiments in Minneapolis 790 



Thelen, R., Aerial Pliotography and National Forest Mapping 244 



Thomas, C.-C, Seed Disinfection by Formaldehyde Vapor 154 



Townsend, C. H. T., Note on Leskiine Synonymy 62 



Tracy, W. W., Persistent Varietal Character in Garden Vegetables 737 



True, R. H., and R. B. Harvey, The Absorption of Calcium Salts by 

 Squash Seedlings 221 



