COLLECTION, EXAMINATION, ETC. 



309 



The thickness of these wooden sHps can be made 

 to vary according to the height of the specimens 

 to be mounted in the cehs ; the shells should in 

 all cases lie below the surface of the slip, to avoid 

 any risk of injury to them. These strips of wood 

 may be cheaply prepared from the wood of cigar 

 boxes, by cutting through both surfaces with a 

 marking gauge. Should a large number of the 

 slips be required, it will be easier to procure a 

 block of w^ood (preferably, mahogany) measuring 

 3 inches by 1 inch, and of any required length, 

 bored through from end to end and sliced up by a 



^vwaA Sji. 





wmh.j:; ' . ' .i!,Jn /...j.i,„i,..iji.i. ,iii,.i.,ii!i>:n.i i,i,j^iuh:,>t ' n,)imt:'l,ai!i,i.f^uMMiML!km'i'ii ' llli'm«''i'' ui 



Fig. 40. — Method of Mounting 



FORAMINIFERA IN DrY CeLLS. 



circular saw according to the needed thickness. 

 The holes in these slips may be made to vary 

 according to the area which the shells will occupy, 

 convenient sizes being -fl inch, \ inch, and \ inch 

 diameters. 



There is another form of mount which is of great 

 convenience to the worker on account of its compact- 

 ness.-^ It is made of a piece of thick cardboard 

 measuring 3 inches by 1 inch or wider, and has a 



' The original form was devised by Messrs. William Swanston and 

 Joseph "Wright. 



