664 INDEX 



Vol. Page 

 and Kenoyer, L. A., Some Additional Notes on Pollina- 

 tion of Red Clover XXIV, 357 



and King, Charlotte M., The Vascular Cryptogams 

 of Iowa and the Adjoining Parts of South- 

 eastern Minnesota and Western Wisconsin.... IX, 134 

 Notes on Factors ir Fungous Diseases of Plants, 

 With Records of Occurrences of Plant Diseases at 



Ames for a Period of Twenty-five Years XVI, 41 



Delayed Germination XVII, 20 



Pollination of Clover XVIII, 35 



Weed Survey of Story County, Iowa XXI, 115 



The Germination and Juvenile Forms of Some 



Oaks XXIV, 367 



A Variation in the Black Walnut XXV, 241 



An Annual White Sweet Clover XXV, 249 



The Germination of Some Trees and Shrubs and 



Their Juvenile Forms XXV, 291 



MacDonald.G. B., and Clark, H. B., The Native and 

 Cultivated Forest Trees and Shrubs of the Mis- 

 souri River Basin XXII, 23 



Page, A. C, and Kay, G. F., Memorial of W. E. Harri- 



man XVI, 8 



and Robb, Luella, Notes on the Histological Structure 



and Specific Gravity of the Seeds of Pyrus XV, 47 



Summers, H. E., and Ross, L. S., Memorial of Charles 



Aldrich XV, 10 



See Macbride and Pammel, Shimek and Pammel. 

 Panicum, See Sporobolus. 



Parasitism, Insect, Study in, R. L. Webster XIX, 205) 



Park, See Jasper Park. 



Park Sites, See Des Moines Valley. 



Parker, H. W., Animal Intelligence I, /. 8 



Animal Aesthetics I, /. 10 



Parker, H. W., Charter Member, L. H. Pammel XIX, 31 



Parks, County, T. H. Macbride HI, 91 



Paroxymetamethylacetophenone and Derivatives, J. G. 



Goodwin IX, 113 



Parry, Dr. C. C, See Lichens. 



Parvus Group, See Unionidse. 



Patrick, G. E., Composite Milk Samples in the Laboratory I, 77, 73 



Chemical Analysis of Soils II, 58 



and Bisbee, D. B., New Distilling Flask for use in 



Kjeldahl Process I. //, 71 



Patrick, G. E., Memorial of, L. H. Pammel XXIII, 17 



Pearce, J. N., The Electrical Conductivity of Solutions of 



Certain Electrolytes in Organic Solvents XXI, 131 



An Im])roved Heating Apparatus for Maintaining 

 Constant Temperatures in Work with Polarimeters 

 and Refractometers XXII, 165 



