320 ril.U'l'KK XXVI. 



acid, however, still swells and dissolves it, though with 

 difficulty. 



Chromatin resists the action of digestive fluids much 

 longer than the albumins do ; so that a moderate digestion 

 serves to free the chromosomes from any caryoplasmic granula- 

 tions that may obscure them, whilst at the same time it clears 

 up the cytoplasm. UNNA (Monatschr. prdkt. Derm., xxxiii, 

 1901, p. 342) digests tissues in solutions of sodium chloride, 

 to remove the granoplasm. 



For Glycogen see CREIGHTON, The Formative Property of Glycogen, 

 London, 1896; GAGE, Trans. Amer. Micr. Svc., xxviii, 1908, p. 203; 

 KATO, Arch. Ges. Phys., cxxvii, 1909, p. 125 ; BEST, Zeit. wiss. Mikr., 

 xx, 1904, p. 358, and xxiii, 1909, p. 319 ; BUSCH, Arch. Intern, Phys., iii. 

 1905, p. 51 ; MAYER, Zeit. wiss. Miltr., xxvi, 1909, p. 513 ; ARNOLD, 

 Sitzb. Heidelberg. Acad. Wiss., 1909, p. 1, 1910, p. 3, and 1911, 14 Abli. ; 

 Arch. Path. Anat., cxciii, 1908, p. 175 ; Arch. mile. Anat., Ixxiii, 1909, p. 

 265 ; Ixxvii, 1911, p. 346 ; JBeitr. path. Anat., li, 1911, p. 439 ; FRAENKUL, 

 Virchow's Arch., 1911, p. 197 ; ZIEGWALLNER, Zeit. iviss. Mile., xxviii, 

 1911, p. 152 ; NEUBERT, Beit,: path. Anat., xlv, 1909, p. 38 ; ERHARD, 

 Arch. Zellforsch., viii, 1912, pp. 447 and 507 ; EHRLICH and LAZARUS, 

 Die Anaemie, 1898, p. 30 ; PEKELHARING, Petrus Camper, Deel I, 1901, 

 p. 231 ; DRIESSEN, Zeit. wiss. Mile., xxii, 1905, p. 422 ; FISCHER, Anat. 

 Anz., xxvi, 1905, p. 399; FIESSINGER, C. R. Soc. Biol.,lx\i, 1909, p. 183; 

 NEUKIRCH, Arch. path. Anat., cc, 1910, p. 82; VASTARINI-CRESI, Ait. 

 Ace. Med. Chir. Napoli, xli, 1907, p. 350, and xliii, 1909, p. 109; 

 SILBERMANN and OZOROWITZ, Ball. Soc. Sci. Bucarest, xvii, 1908, p. 43. 



For Phosphorus see MACALLUM, Proc. Roy. Soc., Ixiii, 1898, p. 467 ; 

 HEINE, Zeit. Phys. Cltemie, xxii, 1896, p. 132; BENSLEY, Biol. Bull. 

 Wood's Roll, x, 1906, p. 62 ; SCOTT, Journ. Phys. Cambridge, xxxv, 1906, 

 p. 119. 



For Iron see MACALLUM, Ergeb. Phys. Wiesbaden, vii, 1908, p. 565 ; 

 TIRMANN, Goerbersdorfer Veroe/entl., ii, 1898, p. Ill ; MACALLUM, Quart. 

 Journ. Micr. Sci., xxxviii, 1895, p. 175 ; SCHNEIDER, Mitth. Zool. Stat. 

 Neapel, xii, 1895, p. 208 ; CARNOY and LEBRUN, La Cellule, xii, 1897, 

 p. 275 ; SUMITA, Arch. path. Anat., cc, 1910, p. 2oO; ZALESKI, Zeit. 

 Phys. Chemie, xiv, 1890; WASSERMANN, Anat. Hefte, xlii, 19J<. p. :>:;. 



For Copper see BOYCE and HERDMAN, Proc. Roy. Soc., Ixii, 1897, p. 

 35 ; MACALLUM, Journ. Phys. Cambridge, xxii, 1897, p. 92; MARFORI, 

 Arch. Hal. Biol., xxx, 1898, p. 186. 



For Zinc see MENDEL and BRADLEY, Amer. Journ. Phys., xiv, 1905, 

 p. 320. 



For Lime salts see GRANDIS and MAININI, Arch. Hal. Biol., xxxiv, 

 1900, p. 75; SCHAFFER, Zeit. wiss. Zool., Ixxxix, 1908, p. 13 ; LEUTERT, 

 Encycl. mikr. Technik, ii, p. 588; STOELTZNER, Arch. path. Anat., clxxx, 

 1905, p. 363 MACALLUM, Erycb. Phys. Wiesbaden, vii, 1908, p. 612. 



