80 JOURNAL OF THE [July, 



48. Mounted Specimen of Larval Sea Urchin, Arbacia punctu- 

 lata, stained with haemacalcium : by Ernest V. Hubbard. 



49. Older Larvae and Ova in Early Segmentation Stages, 

 preserved in Alcohol : by Ernest V. Hubbard. 



50-53, Microphotographs, selected : by Sereno N. Ayres. 

 54-58. Animal and Vegetable Fibres, Wool, Silk, Linen, and 

 Cotton : by E. G. Love, Ph.D. 



59-61. Studies of Utricularia : by C. L. Pollard. 



59. Mature Plant. 



60. Slide showing the modified leaf forming a bladder- 



like trap for catching minute animals. 



61. Slide showing the organs of digestion. 



62-63. Anatomy of the Stem of Polygonum : by John K. 

 Small. 



62. Longitudinal radial section of Polygonum Persicaria. 



63. Transverse section of Polygonum aviculare. 



64-65. Histological Features of Biitttieria fertilis : by T. H» 

 Kearney, Jr. 



64. Section of pericarp of the seed. 



65. Transverse section of the seed. 

 66-69. Study of Nitella : by A. E. Anderson. 



66. Growing plant. 



67. Slide showing antheridium and archegonium. 



68. Slide showing manubrium, capitulum, antheridial fila- 



ments, antherozoids, etc. 



69. Slide showing oospore and pericarp. 



70-71. I. Formative Stages of the Thallus of Cladonia mitrida : 

 by Carlton C. Curtis, Ph.D. 



2. Phegopteris Phegopteris : illustration of the differ- 

 entiation of the elements of the leaf and the optical 

 penetration that may be secured in histological 

 work. 



72. Cuprite (Oxide of Copper) : by H. Fincke. 



73. Gold Ore : by H. Fincke. 



74. Arranged Groups of Diatoms : by H. Fincke. 



75. Microphotograph, the Descent from the Cross : by Hr 

 Fincke. 



76. Diamond Beetle : by H. Fincke. 



77. Human Retina : by H. Fincke. 



