306 



Ionic gradient, 55-57 



chloride exclusion, 57 



energy for, 55 



limited to head-midpiece, 56, 57 



mechanism, 56, 57 



motility, effect on, 57 



potassium, 55-57 



sodium, 55-57 

 Ionic interaction, 70, 71, 73, 77, 80, 



195 

 Ionic pump, 15, 55, 56 

 Ionic tolerance, 287 

 IPPase, see Pyrophosphatase 

 Irritability 



state of, 55 

 Isotopic methods, 55, 56, 90, 91, 93, 



96, 135 

 ITP, see Inosine triphosphate 



Jahn, T. L., 220 

 Johnson Foundation, 101 



Kawai, K., 108 



Kinoplasmic droplet, 177, 286 



Kinoshita, S., 255, 258, 259, 261, 



262 

 K-m-e-f proteins, 224, 225 

 Koltzoff, N. K., 251 

 Korkes, S., 91 

 Kuhn, W., 264 



Lactate 



production by immotile sperm, 



135 

 respiration, effect on, 114 

 substrate, 62, 102, 112, 113, 116, 

 117, 119, 120, 126, 129 

 Lactic acid dehydrogenase, 114 

 Lake Windermere Biological Re- 

 search Station, 190, 228 

 Lalor Foundation, 130 

 Lamb, H., 143 

 Lamont, H. C, 281 

 Lamy, F., 287 

 Lansing, A. I., 287 



Lardy, H. A., 62, 76, 79, 82, 89, 127, 

 172, 290 



Legallais, V., 101 



Lepage, G., 1 1 



Lewin, R. A., 270 



Light microscopy, 7, 8, 14, 27, 32, 

 33, 39, 40, 100, 101, 147, 155, 

 161, 165, 204, 251, 273, 275 



Lipid biosynthesis, 97 



Lodge, J. R., 83 



Lorch, I. J., 220 



Machin, K. E., 9, 173 

 MacLeod, J., 27 

 Magnesium 



ATPase requirement, 179, 181, 



234, 236, 240 

 flagellar swelling, effect on, 241 

 IPPase requirement, 179, 181 

 metabolism, effect on, 76 

 oscillation cycle, 181, 265 

 restoration of sperm motility, 195 

 sperm model reactivation, 258, 

 261 

 Man 

 sperm, 71, 93-94, 153, 164, 166, 

 290 

 Mann, T., 96, 104, 172, 246 

 Mannose 



substrate, 60 

 Manometry, 61, 89, 93, 94 

 Manton, I., 23, 189 

 Marine Biological Laboratory, 



Woods Hole, 101 

 Mark, LL, 220 

 Marsh, B. B., 234, 281 

 Marsh factor, 234, 261 

 Mathematics, 1, 8 

 Mechanism 



flagellar motility, 1, 15, 23, 31. 

 56, 57, 146-148, 153-155, 159, 

 164-165, 172, 181, 184, 186. 

 214, 221-228, 233, 236, 262. 

 264, 276, 279, 280, 293 



