The achilleas take their name from Achilles, because with this he is said to have cured Telephus. Linnaeus uses the word achillea as the generic term for yarrow, milfoil, or sneezewort. For an account of the different species see Ageratum. The name also of the red gum, now called dragon's blood.

Achillis Tendo

See Tendo Achillis.


A genus of plants formed by Vahl among the didynamiae angiospermae, in the family of the personatae. It consists of a single species only, figured in Rheed's Malabar, ix. tab. 87, growing in Cochin China, called by Louveiro dicera. It resembles wood sorrel in taste, and is eaten in sallads as well as dressed.


Te. The red grains of achiotl made into lozenges.


Also the bixa oviedi, daburi. A sort of orleana, growing in New Spain and Brasil, from the bixa orellana Lin. Sp. Pi. "30. The tincture from the fruit used in chocolate is thus made: take the grains when ripe, infuse them in hot water; the sediment is made into cakes, and is used as a paint for the face. Theroucou, which the Indians call achiotl or urucu, the Dutch orleane, and we roucou, is a meal or flour of a seed from the Leeward islands and the isle of St. Domingo: these seeds are of a vermillion colour. The roucou is made in these islands, as we make starch. Choose the roucou of the deepest violet colour, and very dry. Its chief use is among the dyers. See Orleana.


Achne 59 Chaff or the froth of the sea.

Hippocrates expresses by it a whitish mucilage observed in the eyes of patients who have fevers: also a white mucus in the fauces thrown up from the lungs. Besides these it signifies Lint. See Carbasus.


A kind of chamomile mentioned by Prosper Alpinus: its species is not known. V. Chamomile. Avicenna seems to have meant by it the rnarum.


(From α, neg. and Acholos 60 bile,) applied to animals supposed to be without bile.


Achy 64 a species of cassia growing in Arabia, called also


A method of healing wounds among the ancients, which is now not easily understood. It is most probably derived from acu, and may be only the twisted suture.


(From acicu/a,apin or needle,) aci-cular, shaped like a small needle. The trivial name for a species of scirpus.



Acidum Pingue

A fancied acid which Meyer substituted to explain the causticity of lime, which Black attributed to the loss of its fixed air or carbonic acid.

Acidum Formicae

Formic acid. See Formica.

Acidum Arsenicum

Arsenic acid. This is produced by distilling six parts of nitrous acid, from one of the calx of arsenic.

Acidum aethereum.

Acidum vitriolicum, vel sulphuris.

Acidum Aluminosum.

Acidum catholicon.

Acidum primigenium.

Acidum sulphureum.

Acidum muriaticum. Ohm Spiritus Salis Glau-beri. See Marinum sal.

Acidum nitrosum. See Nitrum, N° 5.

Acidum vitriolicuim. Olim Oleum Vitrioli; called also Stagma. Sec Sulphur and Vitriolum viride, and also Acida.

Acidum vitrioli vinosum, i. e. Aether vitriolicus. See Aether.