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people and Indians of Mexico. I am convinced that this article 

 seen in the museum of Nassau, N. P., was used to bruise or grind 

 the corn, seeds of plants, dried fish, etc., used as food by the 

 ancient and now entirely extinct race. The female Bitting upon 

 the ground, takes the mill, places it between her legs ; then taking 

 a flat piece of very hard wood (or stone) which can be found upon 

 beaches, she draws it backward and forward, bringing under it 

 whatever is in the mill, which, by rubbing back and forth, is soon 

 reduced to flour, or to any consistency the animal or vegetable 

 substance was desired. — Edward Palmer. 



MICROSCOPY. 



Postal Micro-cauinet Club.— A club for the circulation and 

 critical study of microscopic objects has been formed, its design 

 and methods conforming mainly to those of the very successful 

 Knglish club. The following rules have been prepared for the use 

 of the organization, and Rev. A. B. Hervey, No. 10 North Second 

 St., Troy, N. Y., has consented to act as secretary until the first 

 regular election of officers. Applications for membership may be 

 made to him or to the Editors of the Naturalist. 



Rules of the American Postal Micro-cabinet Club. 



1 . This club shall be called the American Postal Micro-cabinet 

 club. 



2. Its object shall be the circulation, study, and discussion of 

 microscopic objects. 



3. Reliable persons accustomed to work with the microscope, 

 and able to contribute to the usefulness of the club by sending 

 good objects for examination, shall be eligible to membership. 



4. Applications for membership may be made to the secretary, 

 and should be accompanied by reference to some person, prefer- 

 ably a member of the club or a well known microscopist, who is 

 acquainted with the applicant. 



5. Names of applicants known to be eligible, shall be submitted 

 to vote by the secretary, who shall send them around through the 

 circuits in the letter packages. A four-fifths vote of all the mem- 

 bers shall be necessary to election. 



6. Members elect shall be notified of their election as soon as 

 they can be placed in any circuit, either by the formation of new 



