ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
671 
“British Students’” Microscopes. — This name is given by Messrs. 
R. and J. Beck to their new forms of Students’ Microscopes, two of which 
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are here figured. By making large numbers of these instruments, and 
by the extensive use of machinery in their production, Messrs. Becdc 
1898 2 z 
