846 CHAP PER XXIX. 



acid and stains for 2 to 20 minutes in anilin l>lue 0'5 grins., Orange G. 2, 

 oxalic acid 2, and water 100. His phospbotungstic hsematoxylin stains 

 connective tissue sharply, but does not differentiate it sufficiently from 

 elastic tissue and muscle. 



687. For the complicated procedure of HORNOWSKI see ibid., xxvi, 

 1909, p. 138. 



688. For DELAMARE'S mixture of orcein, haematoxylin, Saurefucbein 

 and picric acid see Verh. Anat. Ges., xix, 1905, p. 227. 



689. MASSON (C. K Soc. Biol, Ixx, 1911, p. W), stains first in 

 liM-inalum, then in eosin, and then for a few minutes in 1 per cent, solu- 

 tion of saffron in tap water (made by boiling). Connective tissuo. b<m<>, 

 and cartilage, yellow. 



690. Benecke's stain for fibrils (Verh. Anat. Ges., vii, 1893, 

 p. 165) is essentially that of KROMAYER, 656. 



691. Bielschowsky's SILVER METHOD (post, under ' 

 fbrils') lias been used for connective-tissue fibrils. SNKSSAIIKW 



(Anat. Anz., xxxvi, 1910, p. 401) employs it as follows : 

 Tissue is hardened in neutral formol and sectioned with a 

 free/ing microtome. The sections are put for at least 4 days 

 into iron alum of 2'5 to 10 per cent., changed daily. They 

 are then silvered for 36 to 48 hours in nitrate of silver of ]0 

 per cent., then treated with the oxide bath and reduced in 

 formol of 20 per cent. Collagen fibres grey, but fine con- 

 nective networks black, nerve fibres unstained or only weakly 

 stained. 



See also MARESCH, Zvit. u-iss. Mik., xxiii, 1906, p. 356 ; 

 STUDNICKA, ibid., p. 416; ZIMMERMANN, ibid., xxv, 1908, 

 p. 10; LEVI, Monit. zool. Ital., 1908, p. 290; HEINJMCH, 

 Arch. Mik. Anat., Ixxiv, 1909, p. 786 (dentine) : INSABATO, 

 Arch. Ital. Anat. Emb., viii, 1909, p. 375 (silvers Flemming 

 material) ; ATHANASIU and DRAGOIU, C. R. Ac.ad. Sci., cli, 

 1910, p. 551 (Ramon y Cajal's silver process, with alcohol 

 fixation). 



Eluxtic T-ix&ue. 



692. Elastic Tissue, Generalities. Elastic fibres have a great 

 affinity for osmium, staining with much more rapidity than 

 most other tissue elements. They are not changed by 



