370 CHAPTER XXVIII. 



HOYER'S method has been given, 355. 



See also the methods of KOLLETT, in Strieker' s Handb., 

 pp. 1102, 1115, or previous editions; and TAKTUFERI, Anat. 

 Anz., v, 1890, p. 524 ; Zeit.f. wiss. Mik., vii, 3, 1890, p. 365, 

 and xi, 3, 1894, p. 346, or previous editions. 



663. Crystalline. LOWE (Arch. f. mik. Anat., 1878, p. 557) 

 hardens the lens for a year and a half at least in 1 per cent, 

 bichromate of potash : G-EBHAEDT (Zeit. f. wiss. Mik., xiii, 

 1896, p. 306) for one or two days in 4 to 10 per cent, forma- 

 lin (the hardened lens is easily dissociated with needles into 

 its fibres). 



For Maceration you may use sulphuric acid, 543. 



