15 
84. STUDY OF THE FLORA OF CENTRAL FLORIDA. George V. 
Nash. Exhibit of species new to science. 
85. STUDIES IN THE BOTANY OF THE SOUTHEASTERN STATES. 
John K. Small. Exhibit of species new to science. 
86. STUDY OF THE LICHENS OF NORTHEASTERN NORTH 
AMERICA. Dr. Albert Schneider. Exhibit of microscopic 
preparations and drawings illustrating some of the more inter- 
esting genera. 
87. STUDY OF STIPULES. A. A. Tyler. Exhibit of numerous 
species bearing these organs, with sketches showing their 
attachment. 
88. NEW JAPANESE CHARACE%. Dr. Timothy F. Allen. Ex- 
hibit of new and interesting species, with microscopic prepa- 
rations of fruit and oospores. 
89. TREATMENT OF DELICATE TISSUES. Dr. Carlton C. Curtis. 
1) A simple dehydrating apparatus. 
2) A convenient mould for imbedding. 
3) An easily constructed settling tube. 
4) Trichomic development of Primuda. 
g0. FORMATION OF POLLEN GRAINS. Dr. M. Rubino. 
1) Mother cell preparatory to division. 
2) Tetramerous stage of the mother cell. 
91. STRUCTURE OF POLLEN GRAINS. Dr. Smith Ely Jelliffe. 
92. CUTICULARIZATION OF THE EPIDERMAL SYSTEM. A. E. 
Anderson. 
1) Superficial cutinization in Ageve. 
2) Circular cutinization in Adzes. Employing a modifica- 
tion of Gram’s method. 
3) Formation of Stomata in Sedum, microscopic prepara- 
tions and plates illustrating mechanism and structure. 
93. ALEURONE GRAINS. C. W. Ogden, Jr. ° 
1) Modification of grains in Paonia. 
2) Component factors of grains in Bertholletza. 
94. VALLISNERIA SPIRALIS: Anatomy and Developmental 
History of Fruit, Seed, and Embryo. Effie A. Southworth. 
