MINUTES OF SECTION A. 



May 12, 1910. — T. Chalkley Palmer exhibited Neidiuvi 

 iridis Ehr., latterly classified in Navicula, finally placed by 

 Cleve in Neidium under another specific name. A talk upon 

 this specimen was illustrated by blackboard drawings. Mr. 

 Palmer also showed Surirella bearing a number of Fragilaria 

 parasitica, and sporangeal frustules on Navicula amphigam- 

 phus. A. S. Barker exhibited an ophiurian from Florida, a 

 sand dollar or sand star (with the preceding included in the 

 Order Echinodermata), sand from sponges, Gorgo?iia (related 

 to the sea fan), and various species of sponges and corals. 



May ig, 1910. — With this session began a series of meet- 

 ings devoted to the consideration of stated subjects. Subject 

 for this evening, "Starfish,"" led by Dr. B. M. Underhill. 



May 26, 1910. — Subject, " Mechanics of Planetary 

 Motion," led by C. M. Broomall. 



June 9, 1910. — Subject, "Protozoa," led by A. S. Barker. 



June r6, 1910. — Subject, "Magic Sqares,"" illustrative of 

 mathematical peculiarities, led by Prof. Alpheus Moon. 



June 23, 1910. — Subject, "Animal Classification," led 

 by Dr. B. M. Underhill. 



June 30, 1910. — Subject, "Fundamentals of Refraction," 

 led by Albert S. Barker. 



July 14, 1910. — Subject, "Unicellular Life," led by 

 C. Edgar Ogden. 



July 21, 1910. — Subject, "Midsummer Botany,"" led In' 

 Sanford Omensetter. 



July 28, 1910. — Sui^ject, " Historical Geology,'" led by 

 Dr. B. M. Underhill. 



