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CHAPTER VI. 



On Mounting. 



UNTIL within the last few years it was considered 

 de rigueur to mount all preparations upon the 

 ordinary sized slips (3 in. by 1 in.) and the author 

 having ventured to produce slides of large sections 

 mounted upon correspondingly wide slips, was told 

 by one of our most accomplished microscopists and 

 workers that if he (the author) persisted in, when 

 necessary, increasing the size of his slips, " everyone 

 would curse him." That curse, like most others, 

 has fallen very harmless, and now we have in 

 England, as has long been the case on the Continent, 

 preparations of large size mounted upon slips and 

 covered with the thinnest glass covers of dimensions 

 corresponding with the size of the section or other 

 specimen to be mounted. As a rule, however, the 

 ordinary sized slip is adhered to, and save in excep- 

 tional cases, and under special necessities or cir- 

 cumstances, this is for several reasons, and especially 

 because the arrangements of the mechanical stage 

 of the microscope are made for slides of those 

 dimensions, advisable and convenient. 



Thin cover glasses are to be procured cut into 



