48 NATURALISTS’ ASSISTANT. 
Chbanarius sclopetarius Stimpson ; while the latter would be 
Chbanarius sclopetarius (Herbst) Stimpson. The second 
and third methods are most commonly adopted, the third 
expressing more than the others. ‘The best authorities omit 
any comma between the scientific name and the authority. 
Should the specimen be a “Ze, an abnormal form or im- 
mature stage, or possess any important features, that fact 
should be noticed on the label. The original labels coming 
with a specimen should be scrupulously preserved in con- 
nection with it, as they give 
a a a value and authenticity 
which the specimen could 
. not otherwise have. 
Various methods have 
a been devised for affixing 
b labels to specimens. When 
the object is fastened to 
Fic. 18. . 
a tablet, it is best to affix 
the label with paste or mucilage, or with short pins, one 
at each end of the label. A mucilage mace of equal 
parts of gum tragacanth and gum arabic in water, to which 
a few drops of glycerine and carbolic acid have been added, 
is possibly as good as any for fastening paper to wood, glass, 
stone or metal. In all other cases the label holder devised 
by the late Caleb Cooke is very advantageous. It is readily 
made by folding a strip of thin tin one-eighth of an inch in 
width in the manner shown in fig. 8. The label is placed in 
the folds shown above and below (a and b) which are then 
closed with a pair of pincers. The label and holder are then 
