l886;]: NEW-YORK MICROSCOPICAL SOCIETY. 99 



of Nicholson pavement laid some sixteen or seventeen years ago, 

 in one of the streets of New York. They were found in abund- 

 ance on the mycelium of fungus in the decayed wood. In ex- 

 amining almost any specimen of decayed wood, the crystals will 

 be found in large numbers, but this is the only specimen in 

 which I have found them upon the mycelium." 



ANTHRENUS SCROPHULARI^. 



The President read a paper on the " Carpet-Beetle {Anthretius 

 scropJmlaricc, L.)." 



Messrs. Arthur J. Wolf, M.D., and Edmund Tweedy, were 

 elected active members of the Society. 



Meeting of May 2ist, 1886. 

 The President, the Rev. J. L. Zabriskie, in the chair. 

 Twenty-five persons present. 



OBJECTS exhibited. 



1. Typhoid-fever Bacilli, from a pure culture, prepared by 

 Dr. Prudden: by C. E. Pellew. 



2. Carbons made from paper, cotton, silk, bamboo, etc., used 

 in incandescence electric lamps: by H. L. Brevoort. 



3. Transverse Section of Anther of Lilium: by W. H. Mead. 



4. Head of the Beetle Eupholus Schenherrii : by B. Braman. 



5. Young of the Nine-Pronged Wheel-Bug {^Reduviiis novena- 

 rhis, Say), just emerged from the egg ; also egg-mass, showing 

 about 120 eggs: by J. L. Zabriskie. 



6. Section of Coal, showing vegetable structure : by F. W. 

 Leggett. 



typhoid-fever BACILLI. 



Mr. Pellew reported to the Society some investigations 

 recently made in regard to the Typhoid-fever bacillus, and in 

 the course of his remarks exhibited several specimens of pure 

 cultures of the bacilli, growing in gelatine tubes and upon 

 potatoes. After giving a short sketch of the previous history of 

 the subject, Mr. Pellew said : '' Typhoid fever has long been 

 recognized as peculiarly a germ disease, and as early as 187 1, 

 observers began to find varieties of bacteria in the tissues of 

 patients. In 1882, however, Eberth discovered in the spleen 

 and other organs, characteristic colonies of short bacilli with 

 rounded ends, and his observations were confirmed immediately 



