Calendar: 1880-1881 Page 687

CLOTHWORKERS' SCIENCE EXHIBITIONS 687 13 Describe two forms of Photometer and show how they are used in comparing the intensity of two lights 14 Explain clearly by means of diagram how it is that stick appears bent when held slanting partly in and partly out of water 15 Describe the construction of some common form of telescope 16 Give brief account of the use of the spectroscope in determining the constitution of the san -230tam Describe the structure of the cell-wall of plants Give general sketch of the internal structure of Monocotyledonous stem Define the following cell-vessel-epiphyte-parasite -rhizome-corn -bulb What do you understand by indeterminate and deter- minate inflorescences Define the following involucre spathe glume- cupule-raceme-spadix Give the essential characters of the following natural orders Rosacese-Ranunculaceae-Composite-Liliacese Define the following terms as applied to leaves am- plexicaul perfoliate verticillate re volute compound- simple-lanceolate-cordate-acuminate-bipinnate-decom- pound-pedate Describe the structure of pollen and explain the process of fertilization Define mineral and rock How many mineral species are described by modern writers on mineralogy What proportions of these are said to be found in the British Isles and in the various colonies connected with Great Britain