Aprit 19, 1901.] 
held on Thursday afternoon and Friday 
forenoon, under the chairmanship of the 
sectional vice-presidents. 
In the Botanical Section, Professor C. F. 
Wheeler, chairman, the following papers 
were read : 
‘The Perception Zone of Roots’: DR. FREDER- 
Ick C. NEWCOMBE, Ann Arbor. 
‘Transition from Stem to Root in Echinocystis 
lobata Torr. & Gray’: Dr. JAMES B. PoLLocK, 
Ann Arbor. 
‘Zysomorphy of Stylidium adnatum R. Br.’ : 
GEroRGE P. Burns, Ann Arbor. 
‘ Adaptation of Solanwm Dulcamara L. to Aquatic 
Conditions’: THERESA G. WiLLramson, Ann Arbor. 
‘Eeological Study of a Glacial Lake near Ann 
Arbor’: Howarp S. REED, Ann Arbor. 
‘ Aerotropism of Roots’: May ELLA BENNETT, 
Ann Arbor. 
‘ A Disease of the White Birch’ : 
Ann Arbor. ; 
‘Conditions influencing the Vitality of Seeds’: 
JosEPH W. T. DUVEL, Aun Arbor. 
‘ Interfoliar Scales of Monocotyledonous Aquatics’: 
Minna C. Denton, Ann Arbor. 
‘Something concerning the Forests of Northern 
Michigan.’ With lantern views: Dr. W. J. BEAL, 
Agricultural College. 
‘Notes on the Flora of Eaton County’: 
FESSOR HuBERT LYMAN CLARK, Olivet. 
‘The Dwarf Mistletoe in Northern Michigan’ : 
PROFESSOR CHARLES F. WHEELER, Agricultural 
College. 
‘The Relation of Algz to Marl’: 
CHARLES A. Davis, Alma. 
‘A Noteworthy Occurrence of Wolfia’: PROFESSOR 
CHARLES A. DAvis, Alma. 
‘Notes on Utricularia cornuta Michx.’: PROFESSOR 
CHARLES A. Davis, Alma. 
‘Notes on Michigan Saprophytic Fungi’: B. O. 
LONGYEAR, Agricultural College. 
‘New Species of Michigan Fungi’: B. 0. Lone- 
YEAR, Agricultural College. 
© A Sclerotium Disease of the Huckleberry ’: B. 0. 
LoNnGYEAR, Agricultural College. 
‘Causes inducing Asparagus to take its Form of 
Growth’: L. LENORE CONOVER, Detroit. 
JOHN LARSEN, 
PRo- 
PROFESSOR 
In the Zoological Section, under the chair- 
manship of Mr. Bryant Walker, of Detroit, 
papers were given as follows : 
‘Phototaxis in Amphipods’: Dr. S. J. Houmus, 
Any Arbor. 
SCIENCE. : 
617 
‘Preliminary Report on the Molluscan Fauna of 
the Region about Ann Arbor’: Mr. H. E. SARGENT, 
Detroit. 
‘ Suggestions for a Method of Studying the Migra- 
tions of Birds’: Mr. L. J. CoLe, Ann Arbor. 
‘The Occurrence of Ammocetes, the Larval Form of 
Lampetra wilderi, near Ann Arbor’: Mr. D. C. 
SCHAFFNER. 
“Some Aspects of the Electrotactic Reaction of 
Lower Organisms’: Mr. RAYMOND PEARL. 
«A Curious Habit of the Slug, Agriolimax’: MR. 
RAYMOND PEARL. 
‘The Effect of very Intense Light on Organisms’ : 
Mr. RAyMonD PEARL and Mr. L. J. COLE. 
‘Certain Reactions of the Common Slug, Agrioli- 
max campestris’: MR. RAYMOND PEARL and Miss 
MavupeE M. DrWirr. 
‘Some Further Notes on the Breeding Habits of 
Amia?: PROFESSOR JACOB REIGHARD. 
‘Qn the Anterior Head Cavity of the Elasmo- 
branchs’: PROFESSOR JACOB REIGHARD. 
‘On the Early History of the Auditory and Lateral 
Line Organs of Amia’: Cord J. BECKWITH. Read 
by Jacob Reighard. 
‘The Classification of Birds’ : 
BERT L. CLARK, Olivet. 
‘The Breeding Habits of Holothurians’ : 
FEessor HuBERT L. CLARK, Olivet. 
‘Death from the Bite of the Water Moccasin, 
Agkistrodon piscivorus’?: PROFESSOR WALTER B. 
BaRRows, Agricultural College. 
‘ Birds of the Carolinian or Upper Sonoran Zone in 
Michigan’: PROFESSOR WALTER B. BARROWS, 
Agricultural College. Read by title. 
PROFESSOR Hu- 
PRO- 
In the Section of Sanitary Science, Hon. 
Frank Wells of Lansing, chairman, the fol- 
lowing papers were read : 
“A Bacteriological Study of an Epidemic among 
Guinea Pigs’: Louis M.GELsTon, Ann Arbor. 
¢Frenkel’s Pneumococcus found in a Case of Ton- 
silitis’?: W.G.CARHART, Ann Arbor. 
‘The Detection of Boric Acid in Milk’: 
VEENBOER, Ann Arbor. 
‘The Detection of Formaldehyde in Milk’: A. 
J. Hoop, Ann Arbor. 
‘The Toxin of the Colon Bacillus’ : 
VAUGHAN, Ann Arbor. 
‘Some Results of Public Health Work’ : 
FRANK WELLS, Lansing. 
‘ Biological Problems in the Prevention of Certain 
Diseases’: Dr. HENRY B. BAKER, Lansing. 
In the Section of Agriculture, J. A. Jef- 
fery, chairman, Dr. W. J. Beal gave a 
W. H. 
Dr. V. C. 
Hon. 
