Grey in the morning ” fine. Red ” wind or rain. Dark blue ” wind. Bright blue ” fine. A high dawn ” wind. A low dawn ” fine. APPENDIX IV YELLOW (p. 15) Yellow is still a non-canonical colour in the church. Blue is also non-canonical. The five canonical colours are (1) white used at Easter, Christmas, Circumcision, and Epiphany; (2) red at Exaltation and Invention of Cross, Pentecost, and Feasts of Martyrs; (3) violet on Ash Wednesday, Lent, Septuagesima, Quinquagesima, and Advent; (4) black on Good Friday; (5) green on ordinary Sundays and week days. APPENDIX V COLOUR AND FORM (p. 4) Since colour is vibration, it is easy to see that it must also give form. Some of the most beautiful designs in the world have been produced by vibration. In his great book on _Colour_, Babbit takes red, yellow, and blue and gives them the forms of the triangle, the hexagon, and the circle. The triangle has the sharpest corners, thus it is appropriate to the energising fiery red. The circle, with no corners, represents the calm indwelling blue; and the yellow, which has energy and yet peace, partakes of the hexagon, which still has angles but yet approaches the shape of the circle. APPENDIX VI (p. 4) M. Camille Flammarion has made many interesting experiments on the growth of plants under different coloured rays. In one experiment he took young lettuces from the same plot of ground, and all the same size. His results showed that-- Under red glass lettuce grows four times as quickly as in direct sunlight. ” green ” ” slightly quicker than in sunlight. ” blue ” becomes very stunted. In another experiment he worked with Indian corn. In sunlight one plant grew to 25 inches. Under red glass ” ” ” 18 ” ” green ” ” ” 8 ” ” blue ” ” ” 6 ” Beans flourished under white and red glass. ” perished ” green ” blue ” From the above it seems that blue glass is bad for plants; but this is not always so, as is seen from the experiments of General Pleasanton, where he grew the best grapes in his district by using alternate white and blue glass in his greenhouses. Babbit states that blue light develops germination of plants, while red and yellow develop animalculæ. Yellow rays cause carbon to deposit from the air, and so form the woody fibre of plants. Red and yellow cause seeding and fruitage. PRINTED IN GREAT BRITAIN BY NEILL AND CO., LTD., EDINBURGH. RIDER’S PUBLICATIONS. =THE NEW SCIENCE OF COLOUR.= By BEATRICE IRWIN. Crown 8vo, cloth, 144 pp., with coloured frontispiece, 3s. 6d. net.