STAINING, PRACTICAL AND THEORETICAL 



AQUEOUS MOUNTING MEDIA 



A.C.S. MOUNTANT 



(Edward Gurr) 



(R.I. 1-418) 



A new fluid mountant for spiders, mites, ticks, etc., especially 

 suitable for whole mounts. Specimens are preserved by A.C.S. 

 without shrinkage and distortion, and the mountant does not 

 crystalhze or darken with age. A.C.S. is miscible both with water 

 and with alcohol, and stains may be incorporated with this 

 mountant which also clear specimens. 



The mountant is unsuitable for Lepidoptera. 



APATHY GUM SYRUP MOUNTANT 



A fairly quick-drying aqueous mountant which sets very hard 

 and may be used in place of Farrant for fat preparations; it is, 

 however, usually definitely acid in reaction. Hardening of the 

 mountant may be hastened if the slides are left on warm plate. 

 Apathy may also be used for ringing glycerine mounts. 



AQUAMOUNT 



(Edward Gurr) 



(R-I- 1-435) 



A moderately quick-drying, transparent and colourless, aqueous 

 mountant which, unlike Apathy and Farrant, is neutral in reaction. 

 It takes somewhat longer to harden than does Apathy but, unlike 

 the latter, it does not tend to crystallize or become excessively 

 brittle. Aquamount is preferable to Apathy or Farrant for fat 

 preparations. 



BERLEZE'S FLUID 



A mountant and killing fluid used in Entomology. Living 

 specimens of Acarina and Insecta are killed by placing them 

 directly into a drop of this fluid on the slide, but specimens which 

 have been stored in alcohol should be washed with 10% aqueous 



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