Nitrogen from wheat, 'J.'i. 



forms for wheat. 'i'\ 

 Norlheru mole cricket, I8ii. 

 Notation, clianges in, (>'). 

 Notothylas, 2ii. 

 Noyes. W. A.. "iCi. 

 Xumerieal radices, :!i). 

 Nyssa, stone characters of, 1<^. 



OECANTHUS. 128, 138, MO. 



angustipennis, 14:'.. 



latipeiiDis, 111, 14-1. 



niveus, ] 11. Ul, 143. 

 oilicers, I. 



past, o. 

 Ohio, aegeria of central, KW. 



recent archaeological discoveries iu. 

 '.•S. 

 Orochari.'^. 1-28, ]:W. 



saltator, 13s. 

 Organized work in chemistry, 

 orgaaogeny of compositae, 7'.i. 

 Ornithology, economical, 21. 

 orthis occidentalis and sinuata, 18. 

 <>rtho]>tera of Illinois, 2"). 

 Osmundaeeae. 17. 



Ontlook iu warfare a.uainst infection, 1 II. 

 Owen. 1). A.. 7(i, I-VJ. 

 Oxidation. 11. 

 Oxygen, atomic weight of, 27. 



PACIFK^ DEEP WATER FISHES, 20. 

 I'ara-nitro-ortho-siilphamine - benzoic acid. 



27. 

 Paraxyleue-sulphamide, 27. 

 Parus bicolor, 1{')7. 

 Peltandra undulata, 1 '.7. 

 Penta-glncoses, 2'.i. 



Pentose carbohydrates, digestibility of.-'>7. 

 Periodicity in thermometers, 26. 

 of root-pressure, 2li. 

 Perkins synthesis. 14. 

 Petrolenm in southwest Indiana. :i(i. 

 Phenyl-hydrazin, action on furfurol, -'17. 

 Phosphate of alumina. 23. .57. 

 Pliosphoric acid, 23, .57. 

 .Photography without camera, 24, 27. 

 Photometric methods, 25. 

 Photomicrography, 18. 

 Phylloscirtus, 128, 137. 



pulchcllus, ].!7. 

 l'hy.siology. .82,91. 



Phytophagus coleoptera Tasnuiuian, Ids. 

 Picus. 30. 

 Pinus, archegouium and apical gfowth, 7ii. 



sylvestris, 2(j. 

 I'lantae, ti8. 

 Plants, variations of, 14. 



Plant zones of Arizona, !'7. 

 Plum leaf fungus, 14. 

 Polygonium, 18. 



cleistoKamy in, '.i2. 

 Polyporoid fungi. 30. 

 Porichthys, phosphorescent organ of, 2'.). 

 Porifera, 6:'>, 

 Potato tuber, 14. 



as means of transmitting energy. '.17. 

 Potential functions, history of, (15. 

 Potter, Theodore, 144. 

 Prairie rattlesnake, 147. 

 Prehistoric earthworks, ii5. 

 Protonotaria citroa, 105. 

 Protoplasm in mucor, 11. 

 Psychic pihenoniena, 31. 

 Pteropoda, 68. 

 Puccineae, 15. 



Purdue I'niversity, Laboratory of, 20. 

 Putnam county fishes, 23. 



flora, 30. 



plants, 25. 

 Pyroneaud pyridone. from benzoyl acetone. 

 4.8. 



Ol'ATERNION INTE(iK.\TI()N!^. 03. 

 t^iercus coccinea, 140. 

 llAFINESfiL'E, Sketch of, 21. 

 Rattlesnakes, breediug habits, etc of. 107, 109 

 Recent archieological discoveries. 08. 

 Recent methods of determination of pho.'^- 



phoric acid. 57. 

 Redding, T. B., 76, 08. 

 Refractive index, value of, 31. 

 Religion and continuity, 2!. 

 Khlnoptera, new speci-^s of. 2o. 

 Rhynchophora Tasmanian, 1€.^. 

 Root pressure, apparatus for ])eriodicity. 2s. 



SAILOR SPIDERS, 2:;. 

 Sandwich Islands, fishes of, 23. 

 Sap circulation, 2i;. 

 Scales of I^epidoptera, bis. 

 Scaphiopus holbrookii, 2o. 

 Seatou, H. E., .so. 

 Seismology, 26. 

 Seismoscope, 20. 

 Selby, Aug. D., 71. ' 

 Shelby county earthquake, 27. 

 Shrews, Indiana, 161. 

 Simulium, meridionale, 1-58. 



pecuarum, I.5.S. 

 Siphonophores, 2.s. 



Sistrusus, breeding habits etc., of, lo'.i. 

 Smith, Alex., 46, is. 

 Snake cactus, 18. 



Snakes, breeding habits of, fod-pjo. 

 Soap analysis, 28. 



