528 A CONTRIBUTION TO THE STUDY OF THE PRECIPITINS 



e<rg-white antiserum upon solutions of the egg-whites of the fowl, 

 duck, pigeon, and turkey. Nuttall,* Levene,t and Graham- 

 Smith J obtained analogous results. ■ In 1901 UhlenhuthS 

 applied this biological method to the separation of different 

 kinds of blood, and especially to the identification of human 

 blood. Wassermaiui and Schutze,|| Mertens,^ Stern,** Nuttall 

 and Dinkelspiel,tt ZuelzerjJ and Ziemke§§ made important 

 investigations on these applications of the test. 



Kovvarski|||| immunised rabbits with extracts of wheateu meal 

 from which the protein coagulated by heat had been filtered off 

 The antisera from such rabbits gave a precipitate with the extract 

 used for immunisation. Similar precipitates were given with 

 extracts of rye and barley. No precipitate occurred with extract 

 of oats. A pronounced cloud formed with extract of peas. It 

 was concluded that the vegetable proteins were not of such 

 diffei'ent kinds as the animal proteins 



Bertarelli^^ examined the relations of the proteins of the bean, 

 pea, lentil, and vetch. He injected dogs with the extracts from 

 these seeds, and obtained weak antisera. No qualitative 

 specificity could be detected. 



Relander*** prepared antisera for the vetch and barley. He 

 found the antisera to be specific for the two substances tested. 



* Journ. of Tropical Med., iv., p.4U8, 1902. 

 + Medical News, Ixxix., p. 981, 1901, quoted by Nuttall, Blood Immunity 

 and Relationship, Cambridge, 1904. 



X Nuttall, Blood Immunity and Relationship, Cambridge, 1904. 



§ Deutsch. med. Wochenschr., xxvii., S.83, 499, and 780, 1901. 



II Deutsch. med. Wochenschr., xxvii., Vereinbeilage, S.SO, 1901. 



H Deutsch. med. Wochenschr.. xxvii., S.161, 1901. 



** Deutsch. med. Wochenschr., xxvii., S.135, 1901. 



tt Journ. of Hygiene, i., p. 367, 1901. 



++ Deutsch. med. Wochenschr., S.219, 1901. 



§§ Deutsch. med. Wochenschr., xxvii., S.424 and 731, 1901. 



nil Deutsch. med. Wochenschr., xxvii., S. 442, 1901. 



HIT Cent. f. Bact. xi., S.8, 1903. 



*** Cent. f. Bact. xx., S.518, 1908. 



