The Hemlock is an umbelliferous plant growing by road-sides and under hedges, and flowers in June and July; it has been mistaken for Parsley, but may be known by the stems being spotted with black; the leaves are of a dark green colour, the upper ones bi-pinnate and the lower ones large and standing on long channelled foot-stalks. [Illustration: Hemlock.] THORN-APPLE (Datura strammonium). The Thorn-Apple is a native of America, but has become almost indigenous, and is frequently found growing in waste places. The whole of the plant is poisonous, and is narcotic when smoked, like tobacco. It is an annual, bearing a funnel-shaped white flower, the fruit is a four-celled capsule covered with sharp spines or thorns, hence its name. [Illustration: Thorn-Apple.] POPPY, Red (Papaver Rhoeas). POPPY, White (Papaver somniferum). [Illustration: White Poppy.] [Illustration: Red Poppy.] The unripe capsules of both of these species of Poppy are narcotic and poisonous, but chiefly those of the White Poppy, from which, the opium of commerce is procured. The leaves are but very slightly narcotic, and the seeds not at all. HENBANE (Hyoscyamus Niger). [Illustration: Henbane.] This plant is an indigenous annual growing in waste places, especially in chalky soil, bearing flowers in July, which are of a yellowish green colour and nauseous odour; the stalk, leaves, and indeed the whole of the plant is covered with hairs. It is very narcotic, and is much used medicine; in over-doses it is poisonous. CAPER (Euphorbia Lathyris). The Caper is a biennial often found in gardens; the seeds are very purgative, and to some persons poisonous. This plant bearing the name of Caper, many persons have erroneously thought the seeds to be the ordinary "Capers" sold at shops for making "Caper-sauce." These, however, are the flower-buds of quite another plant, known as "Capparis spinosa." [Illustration: Caper.] WILD LETTUCE (Lactuca virosa). The Wild Lettuce is a biennial plant flowering in July and August; it is found growing on the banks of ditches, and is sufficiently narcotic to be called poisonous. The dried juice has been used as a substitute for opium, but by cultivation the narcotic property is nearly or altogether lost. [Illustration: Wild Lettuce.] MUSHROOMS, TOADSTOOLS, AND OTHER FUNGI. The only kinds of Mushroom which can be eaten with safety are the common Mushroom (Agaricus campestris), the Champignon (Agaricus oreades), and the Morell (Marchella esculenta). Those which are of very bright colours, or have spots on the cap, those with thin caps, or those which are moist--have a film like a cobweb about the stalk, or have the stalk coming from one side of the cap--are poisonous. [Illustration: Common Mushroom.] [Illustration: Champignon.] [Illustration: Morell.] [Illustration: Poisonous Fungi.] Those marked (*) in the foregoing list are _acrid_ poisons, and the remainder are _narcotic_.