1905 .] 
NATURAL SCIENCES OF PHILADELPHIA. 
925 
of eastern Virginia; by Mr. T. G. Ridpath, on deep wells near Philadel- 
phia; and a dozen shorter communications with various discussions. 
There were 6 field excursions, with an average attendance of about 
33. The parties visited: 1. Upper Cretaceous beds within a dozen 
miles southeast of Camden, N. J. ; 2. Crystalline rocks and their 
minerals near the southern edge of Delaware County; 3. Portions of 
the New Red Gwynedd Shales and Norristown Shales, also Hudson 
River Shales, all in Bucks County, near Chalfont, Doylestown and 
Grenoble; 4. Portions of the New Red Norristown Shales and No. 11 
Limestone in Buckingham Township, Bucks County; 5. Portions of 
the New Red Norristown Shales, Perkasie Shales, Pottstown Shales and 
trap near Lambertville, N. J.; 6. Some mineral places in the crystal- 
line rocks near West Chester. 
At the time of the Buckingham excursion some exceptionally inter- 
esting fossil saurian bones were found in a hole dug at the expense of 
the Section, under the guidance of Mr. John S. Ash, of Holicong, and 
on his land. The Section has had the digging continued. Mr. William 
J. Sinclair, of Princeton, has kindly undertaken the study of the bones, 
and later on will report upon them to the Academy. 
The membership of the Section has increased by four — two members 
and two contributors. 
The following officers of the Section have been elected for the year 
1906: 
Director, .... 
Vice-Director, 
Recorder and Secretary, . 
Treasurer, . 
Conservator, 
Respectfully submitted 
Benjamin Smith Lyman. 
George Vaux, Jr. 
Miss Mary S. Holmes. 
Miss Emma Walter. 
Frank J. Keeley. 
by order of the Section, 
Benj. Smith Lyman, 
Director. 
The Biological and Microscopical Section. 
The Section held its usual monthly meetings with an increased 
attendance and has also met on several occasions for informal discus- 
sion. The members present have offered numerous specimens, both 
mounted and unmounted, for exhibition, and several addresses have 
been made, among which may be mentioned the following: 
J isheries of the Dogger Bank, by Dr. Benj amin Sharp ; Micro-Chemical 
