. Painting and painters' materials: a book of facts for painters and those who use or deal in paint materials . hat we wish in painting ; the flesh (albumen), andthe starch and mucilage are what we do not want. Inpressing the oil, however, we probably get all three. A nalysis of the Ripening of Olives. Composition ofpulp and fruit. , Percentages at different dates. > June 30. July 30. Aug. 30. Sept 30. Oct. 30. Nov, and green leaf substance. .40 other sub-stances •| Percentage o fwater in total plant 61.
. Painting and painters' materials: a book of facts for painters and those who use or deal in paint materials . hat we wish in painting ; the flesh (albumen), andthe starch and mucilage are what we do not want. Inpressing the oil, however, we probably get all three. A nalysis of the Ripening of Olives. Composition ofpulp and fruit. , Percentages at different dates. > June 30. July 30. Aug. 30. Sept 30. Oct. 30. Nov, and green leaf substance. .40 other sub-stances •| Percentage o fwater in total plant As we have no analysis of the ripening of flaxseedwe give that of another oil-giving seed (the olive) atvarious periods of its growth. It will be seen at once that we should get morewater and more substances which we do not want, and * Linum visitatissimuju. t These are woody substances, nitrogenous substances make up the re-mainder. The percentage of water is to the total plant ; of the substancesabove the line to the total of dr/ plant-stuffs. I 14 Painti7ig and Painters Materials,. Flax Plant—Flower, Seed Vessel and flower is blue. Fig. i represents a flower leaf or petal ;there are five to each flower, which is of a very regular and perfectkind, having five petals, five pistils, five stamens, five 2 and 3 are sepals, or cup leaves, to the flower ; figs. 4 and 5represent the seed vessel, with its tall stamens and taller pistils ;fig. 6 is a stamen ; fig. 7 is a seed vessel cut open, showing 10seeds. The stamens fertilize the pistils, the pollen falling uponthe top of the pistil, or probably carried there by some busy each of the pistils (not to speak exactly) grow two seeds, asseen in fig. 7, divided by a little wall. Fig. 8 is a ripe seed of the seed and the perfect seed are seen in figs. 9, 10, 11and 12. I Linseed Oil. 75 also much less oil, from green seed. It is doubtfulwhether either the plant-fle
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