1880.] 417 



Prof. Frazer explained by diagrams his new arrangement, 

 by a side-hinged mirror, for illuminating intensely the 

 whole field of the object under a microscope. A strong 

 side light is reflected at a low angle from the under surface 

 of a glass plate placed across the front of the objective, on 

 to and again from the side mirror suspended from hinges, 

 on to the object, and so back through the tube to the eye of 

 the observer. 



The minutes of the last meeting of the Board of Officers 

 and Council were read. 



Pending nominations Nos. 893, 894, 895, and new nomi- 

 nations Nos. 896, 897 were read. 



And the meeting was adjourned. 



Stated Meeting, March 5, 1880. 



Present, 17 members. 



President, Mr. Fraley, in the Chair. 



A letter accepting membership was received from Mr. 

 Archibald .Geikie, dated Geological Survey Office, Edin- 

 burgh, Feb. 2. 



Letters of acknowledgment were received from the Natural 

 History Society, Emden, dated Nov. 15 (102) ; the Royal 

 Society of Luxembourg, dated Aug. 20 (102) ; the Societe 

 Hollandaise, dated Harlem, Sept 20 (102, 103); and the Sur- 

 geon General's Office, at Washington, dated Feb. 20 (104). 



Letters of envoy were received from the Trigonometrical 



PROC. AMEll. PU1LOS. SOC. XVIII. 105. 3b. PRINTED MARCH 30, 1880. 



