I have not yet tried any experiments with the flower of the love-apple, but there is no doubt that this new method will furnish means of deriving, at a slight expence, a great value from them also.
§ XXVIII.
Herbs and Medicinal Plants.
(Plantes Potagères et Médicinales.)
I filled a bottle with mint (menthe poivrée) in branches and full of flowers. I stirred it with a stick to make the bottle hold a greater quantity of it. I corked it well, &c. and gave it a slight boiling in the water-bath. It was perfectly preserved.
The same may be done with all plants to be preserved in bunches. The operator will calculate the degree of heat which it will be necessary to give to the several subjects of his experiment.[O]
§ XXIX.
The Juices of Herbs.
I have succeeded in preserving very well the juices of such plants as lettuce, chervil, borage (bourache), wild succory (chicorée sauvage), water-cresses (cresson de fontaine), &c. I prepared and purified them by the usual process, I corked them, &c. in order to give them one boiling in the water-bath.