450 



PHYSIOLOGY OF THE FUNGI 



Herrick, J. A., 121, 123, 124, 147 



Hertz, J., 219, 224 



Hervey, A., 29, 43, 77, 78, 85 



Hesse, A., 270, 272, 298 



Hestrin, S., 46, 49, 63 



0-Heteribiotin {see Oxybiotin) 



Heuser, E., 135, 147 



Hevesy, G., 87, 113 



Hexoses, 119-122 



Hickey, R. J., 73, 84, 272, 298 



Higgins, B. B., 376, 396 



Hildebrand, E. M., 424, 439 



Hill, E. G., 16, 22 



Hirneola polytricha, 269 



Hitchens, A. P., 14, 22 



HockenhuU, D. J. D., 93, 113, 414, 417 



Hodgson, R., 378, 396 



Hok, K. A., 32, 44 



Hollis, J. P., 88, 113 



Holoenzymes, 53 



Holzappfel, H. H., 139, 147 



Hopkins, R. H., 50, 63 



Hormones, effect of, on reproduction, 326 



Horn, M. J., 216, 224 



Horner, C. K., 108, 112 



Horowitz, N. H., 211, 216, 217, 224, 225, 



239, 242 

 Horr, W. H., 125, 126, 147 

 Horsfall, J. G., 235, 242, 246, 257, 259, 



260, 262-264, 438, 439 

 Host-parasite relationship, 372 

 Host penetration, 372-375 

 Houlahan, M. B., 182, 202, 205 

 Houston, B. R., 311, 335, 386, 396, 401, 



402, 417 

 Howard, B. H., 294, 299 

 Howard, F. L., 379, 396 

 Humfield, H., 270, 299 

 Hurd, A. M., 388, 396 

 Hutchings, B. L., 216, 224 

 Hydnum imbricatum, 367 

 repandum, 367 

 Hydrogen, 87 

 Hydrogen-ion concentration, changes in 



culture media of, 160, 162-164 

 effect of, on cell morphology, 42 



on enzymes, 55, 161, 162 



on growth, 158-161 



on medium composition, 164 



on oxygen supply, 165 



on spore germination, 360-361 



Hydrogen-ion concentration, effect of, 

 on sporulation, 318-319 

 on utilization of nutrients, 165-167 



as factor in resistance, 388-389 



laboratory exercise, 430-431 



relation of, to pH, 151, 152 



{See also pH) 

 Hydrogen sulfide, production of, by 

 spores, 254, 255 



toxicity of, 254-256 

 Hydrolases, 47 

 Hydroxyproline formula, 238 

 8-Hydroxyquinoline, 260 

 Hygrophorus conicus, 292 

 Hyper parasites, 385 

 Hypersensitiveness, 382 

 Hypomyces, 385 



solani f. cucurbitae, 412 

 Hypoxanthine, effect of, on spore germi- 

 nation, 364, 365 

 Hypoxylon pruinatum, 190, 193 



Imbibition, 37 



Impatiens balsaminia, 257, 390 



Indicators, pH, 157 



Ingold, C. T., 342, 344, 354 



Inheritance, 404-411 



in Ascomycetes, 404-408 



in Basidiomycetes, 408-411 



basis of, 404 



cytoplasmic, 413 

 Inhibition analysis, 299 

 Inoculation, effect of, on sporulation, 332 



laboratory exercise, 431-432 



methods of, 424 

 Inocybe infelix, 293 



infida, 293 

 Inositol, 195-196 



Internal factors, effect of, on growth, 32 

 Invertase {see Sucrase) 

 Ion antagonism, 70, 75, 77 

 Ionization, 149, 150 

 Ions as enzyme activators, 55, 68, 69, 76, 



79 

 Iron, 71, 74-76 

 Isoachlya monilifera, 92, 93 

 Isomers of sugars, 117 

 Itaconic-acid production, 281-282 



