72 THE MICROSCOPE. May 



the aorta. The gills are each supported by a bony arch, 

 formed by three bones. One extends down and back 

 and out from the roof of the mouth for a short distance. 

 The next is jointed to the first, and runs in and down until 

 under the floor of the mouth, and the next bone joins 

 this to the hyoid bone. These bones form the Branchial 

 Arch and support the soft tissue of the gills. These 

 bones also bear teeth, or gill-rakers, to prevent food 

 from escaping between the gills. 



Models for Constitution and By-Laws of a Microscopical 

 Society.— III. 



[In 1893 there were presented the Constitutions of the Washington and 

 San Francisco Societies, pp. 69, 133. Others are desired for use in this 

 series. — Editor.] 



CONSTITUTION OF THE MICROSCOPICAL SOCIETY OF BELGIUM. 



ARTICLE I.— GENERAL PROVISIONS. 



Section 1, This Society is called La Societe Beige de Micros- 

 copie. 



Sec. 2. The object of this society is to cultivate a taste for 

 microscopical studies, to cause the utility of microscopy to be 

 appreciated ; to contribute to the progress of science by publi- 

 cations, by making collections and forming a library ; and by 

 such other methods as may be deemed expedient. The Society 

 studies the subject of micrography in its widest sense including 

 all the medical, natural and industrial sciences. 



Sec. 3. The Society has its headquarters at Brussells. 



Sec. 4. The Society can be dissolved only by the consent of 

 four-fifths of its active members. The last general assembly 

 which shall declare the dissolution, shall dispose of the collec- 

 tions, the library ^nd the archives to some scientific establish- 

 ment. 



Sec. 5. There can be no modification made in this article of 

 this constitution without the consent of four-fifths of the active 

 members, called together by the Executive Council in a general 

 assembly convoked especially for this purpose. If in this first 

 assembly there are not a sufficient number of members presefit 



