57 



Proposition No. i 



That the article of the Constitution on "Expulsion of mem- 

 bers" be amended by the addition of these words: 



"Such expulsion shall require a two-thirds vote of the mem- 

 bers present at the meeting, and shall not be voted unless the 

 charges of unworthiness have been submitted in writing, and 

 the member has been given an opportunity to defend himself 

 against the charges." 



Proposition No. 2 



That the article of the -Constitution on "Amendments" 

 be amended by striking out all after the words "the next regular 

 or special meeting" and the substitution of the words: 



"The proposed amendment shall then be sent by the Secretary 

 to each member; printing a proposed amendment in any regular 

 publication of the Club shall be deemed equivalent to a personal 

 notice sent to each member. The votes received by the Secretary 

 within thirty days shall be canvassed by the President, Secretary, 

 and Treasurer, and the result announced at the next meeting of 

 the Club. From such announcement shall date the adoption or 

 rejection of the proposed amendment. Two-thirds of the votes 

 cast shall be required for its adoption. " 



These amendments were referred to the above mentioned 

 committee for report. 



The scientific part of the program consisted of an illustrated 

 lecture by Dr. John M. Arthur of the Boyce Thompson Institute, 

 entitled "Some effects of carbon dioxide and light upon 

 plant development." A summary of the lecture, kindly sup- 

 plied by Dr. Arthur, is given below: 



The data presented included four different series of experiments 

 as follows : 



1. Plants grown in a greenhouse in ordinary daylight during 

 the winter months. 



2. Plants grown in a greenhouse with daylight plus six hours 

 of artificial light from a gantry crane carrying forty-eight 1,000 

 watt lamps, both with and without additional carbon dioxide. 



3. Plants grown entirely under artificial light in the constant 

 light room. This room was illuminated by twenty-five 1,500 

 watt lamps. 



