Herbarium

(her-ba' -re-um). A collection of dried plants arranged for study; a hortus siccus. the germ-substance of another generation, by the corollary that the whole nature of the animal or plant depends upon its germinal substance, and that the resemblance of the offspring to the parent is due to every go no blast containing some germinal matter. According to Nu baum and Wei mann the cells of the embryo are separated into two kinds: (i) The germ-cells, which become the sexual elements; The somatic cells or body-cells, used as building-material. Kolliker and others have demonstrated that no sharp distinction exists between germ-cells and somatic cells, so that speculations based on such a umed difference nece arily fall to the ground. Naegele's Theory of Idioplasm and Nutritive Plasma, is a definite theory of germinal continuity he; a umes the formative force to reside in a specific material substratum, i. e., idioplasm e entially identical with Wei mann's germ-plasma. Minot a umes idioplasm to be the nuclear substance, chromatin, the e ential factor in the function of heredity, and the nucleus, therefore, the organ of hereditary transmi ion. De Vries' Theory of Intracellular Pangenesis, suggests that the nuclear substance of the germ-plasm is composed of minute particles, Pangenes, not cells, but the bearers of the properties of the cells. There are also in the nucleus Nuclear Rods, called also Idants, and Chromatin Rods, which are built up of a series of ancestral plasms, called Ids, Herb i carnivorous (her-be-kar-niv' '-or-us) herb a, herbage; caro, flesh; vorare, to eat. Omnivorous; living upon both animal and vegetable food.