PUBLICATIONS OF THE INSTITUTION. 261 



24. (See No. 81.) MacDougal, D. T., A. M. Vail, G. H. Shull, and J. K. Small. 



Mutants and Hybrids of the Oenotheras. (Paper No. 2, Station for Experi- 

 mental Evolution.) Octavo, 57 pages, 22 plates. 



25. GuLiCK, J. T. Evolution, Racial and Habitudinal. Octavo, xii + 269 pp., 5 pis. 



26. PuMPELLY, Raphael, W. M. Davis, R. W. Pumpelly, and Ellsworth Hunting- 



ton. Explorations in Turkestan, v^rith an Account of the Basin of Eastern 

 Persia and Sistan. Expedition of 1903. Quarto, xii + 324 pages, 6 plates, 

 174 text figures. 



27. Smith, Erwin F. Bacteria in Relation to Plant Diseases. Quarto, xii + 285 



pages, 31 plates, 146 text figures. 



. Vol. n. History, General Considerations, Vascular Diseases. Quarto, 



VIII + 368 pages, 20 plates, 148 text figures. 



28. Richards, T. W., and R. C. Wells. A Revision of the Atomic Weights of Sodium 



and Chlorine. Octavo, 70 pages. 



29. Baird, J. W. The Color Sensitivity of the Peripheral Retina. Octavo, 80 pages. 



30. Shull, G. H. Stages in the Development of Sium cicutaefoHum. (Paper No. 3, 



Station for Experimental Evolution.) Octavo, 28 pp., 7 pis., 11 figures. 



31. Day, Arthur L., E. T. Allen, J. P. Iddincs, and G. F. Becker. The Isomorphism 



and Thermal Properties of the Feldspars. Part I, Thermal Study; by A. L. 

 Day and E. T. Allen. Part H, Optical Study; by J. P. Iddings, with an 

 Introduction by G. F. Becker. Octavo, 95 pages, 26 plates, 25 text figures. 



32. Dean, Bashford. Chimseroicj Fishes and their Development. Quarto, 194 pages, 



II plates, 144 text figures. 



33. Parkhurst, J. A. Researches in Stellar Photometrj'. Quarto, 192 pages, 13 plates, 



39 text figures. 



34. WiELAND, G. R. American Fossil Cycads. Quarto, viii + 296 pages, 51 plates, 141 



text figures. 



35. (See Nos. 65 and 97.) Coblentz, W. W. Investigations of Infra-red Spectra. 



Part I. Infra-red Absorption Spectra. Part II. Infra-red Emission Spectra. 

 Octavo, 331 pages, 152 text figures. 



36. Stevens, N. M. Studies in Spermatogenesis, with especial reference to the "Acces- 



sory Chromosome." Octavo, 32 pages, 7 plates. 



. Part II : A Comparative Study of the Heterochromosomes in Certain 



Species of Coleoptera, Hemiptera, and Lepidoptera, with especial reference to 

 Sex Determination. Octavo, pages 33-74, plates viii-xv. 



37. Harper, R. A. Sexual Reproduction and the Organization of the Nucleus in Cer- 



tain Mildews. Octavo, 104 pages, 7 plates. 



38. McLaughlin, A. C, W. A. Slade, and E. D. Lewis. Writingson American His- 



tory, 1903. A bibliography of books and articles on United States History 

 published during the year 1903, with some memoranda on other portions of 

 America. Octavo, xiv -f 172 pages. 



39. Handbook of Learned Societies and Institutions — North and South America. Oc- 



tavo, viii + 592 pages. 



40. (See Nos. 62 and 96.) Barus, Carl. The Nucleation of the Uncontaminated 



Atmosphere. Octavo, xii + 152 pages, 104 figures. 



41. DoRSEY, G. A. Traditions of the Caddo. Octavo, 136 pages. 



42. Atw.^ter, W. O., and F. G. Benedict. A Respiration Calorimeter with Appliances 



for the Direct Determination of Oxygen. Octavo, 193 pages, 49 figures. 



43. Peters, C. H. F. Heliographic Positions of Sun-spots, observed at Hamilton Col- 



lege from i860 to 1870. (Edited by E. B. Frost.) Quarto, xiii -f 189 pages. 



44. Scripture, E. W. Researches in Experimental Phonetics. The Study of Speech 



Curves. Quarto, 204 pages, 13 plates, 138 text figures. 



45. FuRNESs, Caroline E. Catalogue of Stars within two degrees of the North Pole, 



deduced from Photographic Measures. Octavo, 85 pages. 



46. Adams, F. D., and E. G. Coker. An Investigation into the Elastic Constants of 



Rocks, more especially with reference to Cubic Compressibility. Octavo, 69 

 pages, 16 plates, 26 text figures. 



47. Mayer, A. G. Rhythmical Pulsation in Scyphomedusse. Octavo, 62 pages, 2 plates, 



36 text figures. 



48. Tower, W. L. An Investigation of Evolution in Chrysomelid Beetles of the Genus 



Leptinotarsa. (Paper No. 4, Station for Experimental Evolution.) Octavo- 

 X + 320 pages, 30 plates, 31 text figures. 



