Celery was known at the beginning of the Christian era.1) As a kitchen spice it is recommended in the Capitulare of Charlemagne 812,2) as a medicament by the abbess Hildegard3) in the early part of the 12. century.

During the period of the distilled waters, celery water was used as a domestic remedy and is repeatidly described in the treatises on distillation of the 15. and 16. centuries.4)

Distilled oil of celery appears to have come into use during the middle of the 16. century. In the spice and drug ordinances it is first mentioned in that of Frankfurt-on-the-Main of 1587, also in the 1589 edition of the Dispensatorium Noricum.

The apiol which crystallizes from the oil at lower temperatures was observed as early as 1715 by the apothecary Christian Link5) of Leipzig, again in 1745 by A. Fr. Walther.6)

The oils from the fresh herb and seeds was distilled by Pabitzky7) in 1754. Both the oils and the crystals separating therefrom are further mentioned by Dehne,8) Bolle,9) and

1) Dioscoridis De materia medica libri quinque. Editio Kuhn-Sprengel. 1829. Vol.1, p. 413. - Plinii Natural is historiae libri. Lib. XX, cap. 47. Editio Littre. Vol. 2, p. 18. - Apicius Caelius in Meyer's Geschichte der Botanik. Vol. 2, p. 242. - Dierbach, Flora Apiciana. 1831. p. 52.

2) Capitulare de villi's et cortis imperialibus. Anno 812. Comments by A. Thaer in Fuhling's Landwirtschaftliche Zeitung. Berlin 1878. 241 - 260.

3) Hildegardis Abbatissae Subtilitatum diversarum naturarum crea-turarum libri novem. Editio Migne. Patrologiae cursus completus. Paris 1855. p. 1158.

4) Hieronymus Brunschwig, Liber de arte destillandi. 1500. fol. 87.

5) Sammlung von Natur und Medicin, wie auch von Kunst- und Lite-raturgescbichten. Leipzig and Budissin 1716.

6) A. Fr. Walther, De oleis vegetabilium essentialibus. Dissertatio. Leipzig 1745. p. 17.

7) Braunschweiger Anzeiger 1754, 1205.

8) Crell's Chem. Journ. 1778, I. 40. 9) Arch. der Pharm. 29 (1829), 168.

Bley.1) The first elementary analysis of the "celery camphor" was made by Blanchet and Sell.2) It was further investigated by Lcewig and Weidmann.3)