392 
W. Lauder Lindsay’s Experiments on the 
TABLE XIV. 
Showing a few instances of the different action of ammonia on the 
alcoholic and aqueous infusion, and of the value of prolonged 
exposure, &c., in the evolution of colouring matter. 
Name of Lichen. 
Borrera ciliaris 
furfuracea 
pulverulenta 
Cladonia coccifera 
Evernia prunastri 
Gyrophora murina 
pellita 
proboscidea 
Tsidium corallinum 
Lecanora Parella 
tartarea 
Parmelia parietina 
perlata 
physodes 
Peltidea canina 
Ramalina fraxinea 
farinacea 
scopulorum 
Stereocaulon paschale 
Umbilicaria pustulata 
Effects of Ammonia 
on 
Alcoholic Infusion. 
Greenish-yellow 
Orange-yellow 
Greenish-yellow 
Orange-red 
Orange-yellow 
Orange-red 
Brownish-yellow 
Orange-red 
Orange-yellow 
rinect % 
Orange-red 
Greenish-yellow 
Orange-yellow 
Orange-red 
Effects of simple 
Ammoniacal Ma- 
ceration. 
Brownish-yellow 
Purple 
Rrowulahesead 
Purple 
Purple-red 
Purple ; 
Creumiatichenire 
Purple 
Brownish-red 
Brownish-yellow 
Purple 
Brownish-red 
Purple 
In the majority of the above, prolonged exposure of the alcoholic 
decoction, after the addition of ammonia, to the air, along with the 
maintenance of a suitable temperature, &c., would yield colours 
similar in tint, if not in degree, to those produced by simple lengthened 
maceration in dilute aqua ammonie. 
TABLE XV, 
The alcoholic infusion of the following species gives a beautiful bright 
greenish-yellow tint on the addition of ammonia. 
Borrera flavicans 
tenella 
Cetraria glauca v. fallax 
juniperina 
Cladonia amaurocreea 
furcata v. fruticosa 
v. rangiformis 
v. subulata 
Collema nigrescens 
saturninum 
Cornicularia ochroleuca 
Lecanora atra 
glauca 
subfusea 
varia 
Lecidea dubia 
