THE MICROSCOPE. 139 



well received, picking and turning the diatoms very neatly. The 

 new staining preparations of vesuvin and anilin blue were on exhibi- 

 tion. Two forms of the camera lucida should be mentioned, also an 

 Abbe test plate. This firm has just issued some new catalogues 

 containing many new and desirable things. You can obtain copies 

 for the asking. 



BAUSCH AND LOME. 



Mr. Ed. Bausch exhibited a number of instruments, including 

 their new "professional." The objectives from this house were 

 carefully examined, for it was with one of their homogeneous im- 

 mersions that Dr. Up de Graff resolved the band on Fasoldt's plate 

 said to be ruled 152,400 lines to the inch. 



This firm has just issued a new catalogue, containing about 

 double the amount of former ones. They are now prepared to fur- 

 nish a full line of accessories. These new catalogues will be sent ou 

 application. 



R. & J. BECK. 



Mr. W. H. Walmsley had a full line of goods from this firm on 

 exhibition. The prices ranged from the "Scholars" at $«5, to the 

 " International " at $1,650, equipped with objectives ranging from 

 $7 to $150. Two of our friends in Jackson, Mich., own "Interna- 

 tionals." We refer to Gen. Wm. Humphreys and Mr. Bennett. 



Mr. Walmsley furnishes catalogues to all who apply. 



GUNDLACH. 



Mr. L. R. Sexton was present with a fine stock of this ingenious 

 optician's goods, but was prevented from exhibiting them on ac- 

 count of a sudden and severe illness. He is ready to furnish cata- 

 logues. 



FOR several weeks during the past summer we had the pleasure 

 of working with Mr. C. B. Allaire, of the firm of Allaire, 

 Woodward & Co., Peoria, 111. Mr. Allaire not only understands the 

 use of the microscope, but also puts his knowledge to the practical 



