242 W. Lauder Lindsay’s Experiments on the 
TABLE V. 
Showing the Species the Alcoholic Solutions of which give, on maceration in 
dilute aqua ammoniz, various shades of red or purple.* 
Pes ob ee Light. ae tage’ Deal 
Borrera Ashneh, . . , Cherry. — 
chryso hthalma, 3 specimens from ) ,. ; 
ee France, Se gecrat \ Paty Pe C 
Cetraria islandica, : ‘ ; : Brown. Brown. 
Gyrophora hirsuta, 3 cara : ; Cherry. 
pellita, j ; F — — 
polyphylla, 2 specimens, ; —- — 
proboscidea, : : ; _ 
Isidium coccodes, | : , : ‘ Cherry. 
Lecanora albella, . : : : : — 
mre, «5 ‘ P : 5 Blood. 
callopisma, . — 
lutescens, : ; : t — x 
oreina, . : i ; ; Blood. 
radiosa, v. inflata, . : ; — 
speirea, : - ; i — 
sophodes, : . : Cherry. 
tartarea, 2 ‘ : “== — 
ventosa, 2 specimens, . Blood. — 
Nr alagait, ye : : = 
Lecidea aurea, . : : : Cherry. 
commutata, .. ‘ ; ; — 
coronata, , ; } — 
erythrella, v. fuseo— : ; 
virens, : — 
i icmadophila, 2 specimens, . ) Brown. 
sanguinaria, : : ; 
speirea, . ’ ! ‘ Blood. 
uliginosa, ; : a 
Wahlenbergii, ; Cherry. 
* Alcohol appears to be an excellent solvent of the active colorific principles of the plat nts 
presenting them in a condition to be readily acted on by ammonia or other reagents. 
The results of the reaction of ammonia on the alcoholic solution, is generally similar t 
the effect of simple ammoniacal maceration, so that this mode of applying Helot’s e 
a very convenient and elegant one. There is sometimes, however, a considerable differer 
between the effects of ammonia on the alcoholic and aqueous solution. (Vide Table xiv | 
m” 
a) 
