The Microscope. 149 



fill instrument by whose power the hidden things of nature are re- 

 vealed should give to us a broadness of mind and character, and a 

 charity toward all men, so that when our little light has flickered out 

 it may be said of us that we lived not in vain, and, that noblest monu- 

 ment of all, our works do follow us. Lend a hand. 



In the death of Dr. A. Y. Moore, The Microscope loses a true, 

 faithful and generous friend. Always ready with kindly words of 

 encouragement and suggestion ; always willing and prompt with his 

 promised communications, he endeared himself, not only to those 

 of us who could personally call him friend, but to the others who 

 knew him only through his correspondence. 



Although so young, he had accomplished much in scientific 

 microscopy. Had he lived he would undoubtedly have distin- 

 guished himself greatly in the department of his profession which 

 he had chosen for his life's work. Few men at twenty-seven can 

 boast of so illustrious a career, and few die so universally loved and 

 mourned. Almost from the beginning of this journal Dr. Moore 

 has contributed to its pages, and when disease laid siege at his life's 

 portal, he was at work upon an article for us. The following brief 

 list of his more notable papers published in The Microscope indi- 

 cate his wide and thorough knowledge of microscopy in all its 

 departments : 



" The Differential Staining of Nucleated Blood Corpuscles," 



"The Podiu-a Scale." 



" Amphipleura Pellucida by Central Light." 



" The Measurement of Numerical Aperture." 



" The Parabola as an Illuminator for Homogeneous Immersion 

 Objectives," 



" Beck's Vertical Illuminator and Immersion Objectives," 



"The Fakir's Secret." 



" Homogeneous Immersion Objectives." 



" The Microspectroscope." 



" The Zeiss J^ Objective." 



"The Detection of Eenal Casts." 



" A Central Light Objective." 



"Mounting Whole Insects," etc., etc. 



Secretaries of societies will confer a favor by sending us com- 

 plete lists of their membership. We shall also be glad to have the 

 names of any of the friends of this journal who are not already on 

 our books. 



