244 



BOTANY. 



Hermaphrodite, 199. 



Heterocyst, 17. 



Heterostylism, 228. 



Hibiscus, 195. 



Hickory, 170, 183. 



Holly, 199. 



Hollyhock, 195. 



Honey locust, 209. 



Honeysuckle, 170, 172, 181, 223; Fig. 



124. 



Hop, 171, 181; Fig. 97. 

 Horned pond-weed, 224. 

 Horse-chestnut, 170, 199. 

 Horse-tail, 116-120. 



field, 120-122; Fig. 72. 



stems and tubers, 120. 



fertile branches, 120. 



leaves, 121. 



cone, 121. 



stem, 121. 



sporangia and spores, 121. 



sterile branches, 121. 



histology of stem, 121. 

 of sporangia, 122. 



spores, 122. 



germination, prothallium, 122. 

 Hound 's-tongue, 215; Fig. 119. 

 Houstonia, 223; Fig. 124. 

 Hoya. See " Wax-plant.!' 

 Huckleberry, 181, 211; Fig. 116. 

 Humming-bird, 226. 

 Hyacinth, 146. 

 Hydnum, 84 ; Fig. 51. 

 Hydrangea, -yese, 202; Fig. 111. 

 Hydrocharidese, 167. 

 Hydrogen, 2, 95. 

 Hydropeltidinse, 189. 

 Hydrophyllum, -acess. See "Water- 

 leaf." 



Hypericnm, -acese. See "St. John's- 

 wort." 



Ilex. See " Holly." 

 Impatiens. See "Jewel-weed,' 

 sam." 



Bal- 



India-rubber, 200. 



Indian-pipe, 144, 210 ; Fig. 79. 



Indian turnip. See "Arissema." 



Indusium, 118. 



Inflorescence, 157. 



Integument, 133, 144, 151, 180. 



Intercellular space, 124, 135, 150. 



Internode, 39. 



Iodine, 4, 22, 31. 



Ipomcea, 213. 



Iridacese, 156. 



Iris, 154, 156; Fig. 84. 



Irish moss, 49. 



IsocarpsB, 210, 212. 



Isoetes. See "Quill- wort." 



luliflora, 181. 



Ivy, 202. 



Jack-in-the-pulpit. See "Arissema." 



Jasmine, 218. 



Jeffersonia. See " Twin-leaf." 



Jewel-weed, 197 ; Fig. 107. 



Joint fir, 140, 142. 



Juncac/inese, 167. 



Juncus. See " Rush." 



Jungermanniacese, 92 ; Fig. 57. 



Kalmia. See " Mountain laurel." 



Karyokinesis, 233. 



Keel, 208. 



Kelp. See "Laminaria." 



giant. See "Macrocystis." 

 Knotgrass. See "Polyyonum." 



Labellum. See " Lip." 



Labiatse. See " Mint." 



Labiatiflorae, 215. 



Lady's-slipper, 164, 166, 198; Fig. 90. 



Lamella, 83. 



Laminaria, 45, 47 ; Fig. 28. 



Lamium. See " Dead nettle." 



Larch. See " Tamarack." 



Larix. See " Tamarack." 



Larkspur, 186, 227; Fig. 99. 



Latex, 191. 



