INDEX OF SUBJECTS 



315 



Tnli/in (,', SIK i-'iinn I... 71!, 71; Tulii 



!irt< ;i.v7.s' (I'dijrl >/>.. 7 1 

 Tulips. :mili(ir\ MIIIIIS in, 7~> ; xantho- 



plnlls in. 71!. 

 Tulip tree, autumn pigments of, 58; 



rami in in tlnueis nf, 7L 1 . 

 TurkV-r;ip gourd, pigments of, 78. 

 Turnip leaves, .nolated pin-mi nts of, 



52. 

 Turnip root, yellow (Brassica Rapa L.), 



relation of red piument in to lycopin, 



29. 



Turtles, carol inoids in, 149, 150. 

 Farfara L., 73. 



rranidini\ a skin pigment of sea cu- 

 eumlier--. 166. 



/ edineae, 113-116, 263. 



; i> i upl/raxir, 114, 116. 

 I'redo spore?, color of, 115. 

 I'ric acid derivatives, butterfly pig- 



ments caused by, 155. 

 I'ronu/ccs alchcmillae, 114. 

 I'rlica, 36, 45; Urtica dioicn, as source 



of carotin, 202; carotin content of, 



249. 



I '!> .r cjiro]>a< UK, 73. 

 I'lniuft cainji, .--/r/'x, 58, 59. 

 I' Ira Inctnca, quantity of carotinoids 



in. 103. 

 Ulvales, 104. 

 Unsaponifiable matter of fats, caro- 



tinoids and vitamin A in, 206. 

 I alaria grandiflora, 74. 



Vaucheria species, 104. 



Vegetable oils, as solvent for chloro- 



phyll in Kraus separation, 32; lack 



of correlation between pigmentation 



and vitamin content of, 270. 

 Virbascum species, 73; Vcrbascum 



thapsiforma, 71, 74, 115. 

 mum Opulns, 77; Viburnum Tinus, 



251. 



Vhii-a Mnjor, 249. 

 Viola b/ flora, 74; Viola cornuta L., va- 



riety DaMowic yellow, 74; Viola 



Inhs, 74; Viola odorata, 71, 74, 249; 



\ tula tricolor L., 73. 

 Yiulrt alcae, 104, 105. 

 \"inlpf. Jliiiind, carotiimids in, 74; 



sweet, quantity of c:irotin in, 71, 247; 



(Mi-nf inoid.< in, 74; yullow petal, caro- 



tiimids in. 7. 

 Virb . 1R1. 



Vitamin A, extractability of from al- 



t'all'a. carrots and yrllmv maizr, 269; 

 ivlatinn.-lijp nf tr, cMiiitiiKJid.s, 268-270, 

 271 

 Vitellolutein, 162. 



Vitrlloruhin. '2:\. ir>J 



I'/O.s- cuii/iii I "i: , .~>s ; 1 fi fO, -III. 



\\'nlilsi, ii/in, i/, aides, 7 1. 



Wall-llmvcr, \antliojiliylU in, ~'l ; an- 



tll(ic\ :ilims ill, 75. 



Walnut lca\ '( in content (if, -111. 



\\'astc pi-mil, ,t moids as in plants 



and animals, 262, 263. 

 Watermelon, pigments of lloh of, 78. 

 Wheat leaves, carotin content of, 249; 



flour, unbleached, carol inoids of, 88; 



seedlings, etiolated pigments of, 52, 

 White Beam-tree, carotinoids in fruit 



of, 80. 



Wild Ginger, carotin in fruit of, 79. 

 Willow, Goat, autumn pigments of, 58; 



weeping, autumn pigments of, 58. 

 Winter Aconite, carotinoids in, 73. 

 Woodpecker, pigments in feathers of, 



143-145. 

 Worms, carotinoids in, 168, 169; color 



of as influenced by food, 186; non- 



carotinoids in, 154. 

 Wra.->e, carotinoids in, 161. 



Xanthei'ns, relation to anthocyauins and 

 flavones, 67. 



Xant hernia, 136. 



Xanthia flarago, 157. 



Xanthin of C. Krause in autumn 

 leaves, relation of to carotin, 60; of 

 Dippel, relation to carotin and xan- 

 thophyll, 34; in yellow leaves, 54; 

 of Fremy and Cloe'z, 67. 



Xanthocarotin, 38, 39; alleged transfor- 

 mation of to xanthophyll, 39; rela- 

 tion of to carotinoids, 39. 



Xanthomelus aureus, 144, 145. 



Xanthones, 21. 



Xanthophanes in bird retinas, rela- 

 tion of to xanthophyll, 142. 



Xanthophane-like pigment in Tubu- 

 laria indirisa, 169. 



Xanthosis, 194. 



Xanthophyll, absorption of oxygen by, 

 237, 238; alleged production of from 

 carotin and chlorophyll, 265; consti- 

 tution of, 238; effect of alkalis on, 

 225, 226; excretion of by skin in 

 fouls, 274; halogen derivatives of, 

 237; isolation of from blood serum, 

 214, 215; from cgn yolk, 212-214; 

 from green leaves, L'li'.l-L'IJ, LV>1 ; lack 

 of hydroxyl, carl>o\vl and carlionyl 

 groups in molecule of, 17; origin of 

 name of, :!1 ; reduct ion of to carotin, 

 48; relation of to carotin, -1. 



Xanthophyll a ti; distinguish- 



ing properties of, 228; relation of to 



