INDEX 



149 



pancreas, acinar cell, fig. 2, opp. 

 p. 10; 11 



Paneth cell, 101 



parabenzoquinone, 88 



paraffin, 71 



paraformaldehyde, 40 



paraquinonoid ring, 88 



pararosaniline, 89, 93 



paratoluidine, 89 



penetration of fixatives, 21 



peptide group, 18, 69 



perfusion, 18 



permeability of tissue-constitu- 

 ents, 108 



perspex, 79 



phagocytes, 85 



phase-contrast microscopy, 14, 

 84, 124, 128 



phenyl, free radicle, 81 



phospholipids, 36, 43, 50, 57, 98 



plasson, 1 



plasticizer, 131, 132 



polyglutamic acid, 41 



polyglutamine, 41 



polyglycine, 41 



polymerization, 79, 82, 105 



polystyrene, 131 



Porter, fig. 2, opp. p. 10 



postchroming, 57 



potassium alum, see potassium 

 aluminium sulphate 



potassium aluminium sulphate 

 as mordant, 119, 120, 122 

 in preparation of carmine, 95 

 use in gelatine embedding, 70 



potassium dichromate, 17, 27, 40, 

 49 

 'critical range', 50 



potassium ferrocyanide, 86 



practical fixative solutions, 55 



preservatives, 15 



proline, 68 



proteins 

 fixation of, 32, 34, 37, 41, 45, 49 

 refractive index of, 124, 127, 



129 

 structure of, 19 



protoplasm, 1 



Protozoa, 12 



Prussian blue, 86 



purpural, 111 



purpurine. 111, 121 



compound with calcium, 115 

 compound with cobalt, 115 

 ionized, 113 



quinonoid dyes, 92 



reaction-products, 134 



red blood-corpuscles, 1, 98, 100, 

 101, 102, 115 



refractive index 



of Farrants's medium, 130 

 of fixed protein, 124 

 of glycerol solutions, 129 

 of methyl salicylate, 131 



Regaud, 65 



regressive dyeing, 121 



restrainers, 112 



rhamnose, 130 



ribonucleic acid, see RNA 



ribonucleoprotein, 98 



RNA, 5, 12, 98 



Riibia, 111 



salicylic acid, 122 



Sanfelice, 64 



saturated colours, 109 



scleroproteins, 16 



sealing of coverslip, 128, 133 



secret reagents, 134 



segmer, 79 



shrinkage 



by dehydrating agents, 72, 74 



by fixatives, 27, 56, 62 

 silica, 16 



single-bath mordant dyeing, 117 

 'small particles' of Palade, 10, 12 

 smooth muscle, 101 

 sodium acetate, 58 

 sodium iodate, 120 

 sodium 77-hydroxybenzoate, 77 

 sodium salicylate, 122 

 sodium veronal, 58 

 spermatogonium, 2 

 spindle attachment, 6 

 Spokes, ix 

 starch, 16 



structural colours, 87 

 structure of cell, 1 



