112 JOURNAL OF THE [April, 



15. Methods of manipulation, decantation, desiccation, isola- 

 tion, etc. 



16. Methods of measuring aperture, power, focal length, etc. 



17. Methods of illumination for special purposes, special ob- 

 jects, etc. 



18. Uses of the Mechanical Finger. Application to research, 

 etc. 



19. Electrical and thermal applications in research. Hot 

 Stages, etc. 



20. Uses of Live-Boxes, Growing-Cells, Compressoriums, 

 Troughs, and special apparatus for investigations of special ob- 

 jects, etc. 



21. Special methods of treatment or examination of special 

 subjects of investigation, such as blood, pus, urine, etc. 



22. Staining and mounting bacteria, micrococci, etc., for ex- 

 amination. 



23. Special methods of cell-making, cementing, cover-cutting, 

 etc. 



24. Special methods of mounting, labelling, finishing, packing, 

 storing, or registering slides. Finder Records, etc., etc. 



It is expected that one or more workers will illustrate each of 

 the above subjects. Many of the most efficient members of the 

 Society have already promised their co-operation. Suggestions 

 relating to the work in any respect are invited, and all who are 

 willing to aid in illustrating any of the above, or other subjects 

 not enumerated, are cordially requested to inform me as soon as 

 possible what part of the work they will undertake, and commu- 

 nicate such information as may be needed in preparing for the 

 suitable presentation of their exhibits. 



164 Lake Street, C. M. Vorce. 



Cleveland, Ohio. 



Corrigendum. — For the words, "A New Microscope Stand, 

 furnished by Mr. Green, successor to Mr. Tolles," in the Jan- 

 uary Number of the Journal, page 26, substitute the words, 

 A New Microscope Stand, made by Mr. Dalton, of Boston. 



