308 
ANNALS NEW YORK ACADEMY OF SCIENCES 
Mr. Kinney described, in his paper, an occurrence at One Hundred and 
Thirtieth Street, New York City, where an original basic intrusion has by 
metamorphism and alteration developed an interesting variety of petro¬ 
graphic character. The author further stated that as in most other similar 
cases this one also shows little or no anthophyllite in the specimens studied, 
and the name is not exactly applicable, but there are other amphiboles in 
abundance. A general petrographic description was given, and remarks 
were made by Dr. A. A. Julien and Dr. Charles P. Berkey. 
Dr. Julien described several “moulin” potholes in addition to the enum¬ 
eration of the commonly known cases of this type of erosional feature within 
New York City. Remarks were made by Dr. Berkey on the St. Croix 
Dalles occurrence, by Professor Stevenson on other observations and by Dr. 
Hovey on occurrences in Mexico. 
The Section then adjourned. 
Charles P. Berkey, 
Secretary. 
SECTION OF BIOLOGY. 
May 10, 1909. 
Section met at 8:15 p. m., Vice-President Chapman presiding. 
Mr. Frank M. Chapman was elected Secretary pro tem. in the absence 
of the secretary. 
The minutes of the last meeting of the Section were read and approved. 
The following programme was then offered: 
Charles L. Bristol, Bufo agua in Bermuda. 
Frank E. Lutz, The Relation between the Taxonomic Characters 
of Crickets ( Gryllus ) and the Environment. 
Ernest E. Smith, What are Deleterious Ingredients of Food? 
Summary of Papers. 
Dr. Lutz said, in abstract: The species of Gryllus are distinguished chiefly 
by the actual and relative sizes of the ovipositor, posterior femora, wings 
and tegmina. The length of the ovipositor is correlated with the character 
of the soil, being longer on sand soils than on the firmer ones. This was 
probably brought about by selection destroying the eggs which are not 
deeply placed in loose soil. The length of the wings seems to be a function 
