E. GREEN.
The varieties of this colour naturally fall into two prin cipal suites ; in the one of which the blue colour pre vails ; in the other the yellow ; and between the two is placed the pure or characteristic colour, the eme rald-green. Although it is not a common colour in the mineral kingdom, yet it is met with more fre qtiently than the blue. In earthy minerals, the green colours are generally owing to oxide of iron ; in a few cases to the oxide of chrome; in others to oxide of copper ; and in a very few to oxide of nickel.
The following are the varieties of this colour.
a. Verdigris-green is emerald green mixed with much Berlin-blue, and a little white. It is the link which comects the green and blue colours together. Ex amples, Copper-green and green Siberian felspar.
b. Celandine-green is verdiglis-green mixed with ash grey. Examples, Green earth, Siberian and Brazilian beryl.
c. Mountain-green is emerald-green, mixed with much blue, and a little yellowisii-grey ; of verdigris-green with yellowish-grey. It passes into greenish-grey. Examples, Beryl, aqua marine topaz, glassy actyno lite, common garnet, and hornstonc.
d. Leek-green is emerald green, with bluish-grey and a little brown. It is the sap-green of painters. In this colour the blue and yellow colours are in equal proportions. Examples, Nephrite, common actyno lite, and prase.
c. Emerald-green. The characteristic or pure unmix ed green. All the preceding green colours are more or less mixed with blue, and at length pass into it ; but the following part of the green series, by the in creasing proportion of yellow, at length passes into yellow. Examples, Emerald, fibrous malachite, cop
per-mica, and sometimes also fluor-spar.
f. Apple-green is emerald-green mixed with a little gt eyish-white. It passes into greenish white. Ex amples, Nickel ochre and chrysoprase.
g. Grass-green is emerald green mixed with a little le mon-yellow. The colour of fresh newly sprung grass. Example, Uranite.
h. Blackish-green is pistachio-green mixed with a con siderable portion of black. It passes into greenish black. Examples, Precious serpentine and augite.
1. Pistachio-green is emerald-green mixed with more yellow than in grass-green, and a small portion of brown. Examples, Chrysolite, and epidote or pista cite.
h-. is pistachio-green mixed with a lit tle greyish white ; or emerald-green mixed with yel low and a little brown. It passes into liver-brown. Examples, Garnet, olivenite and beryl.
I. Olive-green is grass-green mixed with much brown and a little grey. It passes into liver brown. Exam ples, Common garnet, olivenite, pitchstone, and epi dote or pistacite.
m. Oil-green is emerald-green mixed with yellow, brown, and grey ; or pistachio-green, with much yellow and light ash-grey. it is the colour of fresh vegetable oil. Examples, Fuller's-earth, beryl and pitchstone.
n. Siskin-green is mixed with much le mon-yellow and a little white. It makes the transi tion to the yellow colour. Examples, Uran-mica, green lead-spar and steatite.