100 THE AMERICAN MONTHLY [March 



19. With Acme, No. 4— (1) Section of Cartilage. (2) Blood Corpuscles, 

 Amphiuma. (3) Section showing structure of Muscle — Dr. G. J. Holmes. 



20. With Bausch & Lomb's Harvard — (1) Section showing Ossification 

 of Cartilage. (2) Blood Corpuscles, Allligator. (3) Section showing struc- 

 ture of Nerve — Dr. G. J. Holmes. 



21. With Bausch & Lomb's Model— (1) Section of Bone. (2) Blood Cor. 

 puscles. Human. (3) Section showing structure ofBrain — Dr. G. J. Holmes. 



22. With Bausch & Lomb's Universal — (1) Mineral section, Wavellite, 

 with Polarized Light. (2) Japanese Sketch, made of Butterfly Scales. (3) 

 Skin of Sole— A. L. Wiard. 



23. With Zentmayer's Army Hospital — (1) Mineral section, Porphyritic 

 Basalt, with Polarized Light. (2) Section of Chalcedony, with Polarized 

 Light. (3) Young Oysters — M. S. Wiard. 



24. With French — (1) Transverse section of stem of Lime. (2) Trans- 

 verse section of Petiole of Pond Lilly. (3) Young Starfish — M. S. Wiard. 



25. With Wales' New Working — Living objects in Water — A. N. 

 Lewis. 



26. With Wales' New Working — Living objects in Water — C. M. 

 Burgess. 



EDITORIAL. 



Proportion of Instruments in Use. — A soiree is a prettj 

 good place at which to observe the kind of instruments in use 

 by the local scientists. An illustration of this is just at hand 

 in the case of the exhibits made by the New Britain Scientific 

 Association, where we find the number of instruments credited 

 to each maker was as follows: 



Bausch & Lomb, 12. 



Zentmayer, 4. 



Wales, 3. 



French, 3. 



F. Leitz, 2. ♦ 



Beck, 1. 



Acme, 1. 

 It must be very gratifying to Bausch & Lomb to find that 

 their instruments represent forty-six per cent of the total. 



The Philadelphia concern which is notorious for cut rates and 



clearance catalogues came very near not being represented at all. 



Watson & Sons of London, do not happen to be represented 



in the list. We trust our New Britain friends will not forget 



the high-grade of workmanship for which the Watsons are 



