500 BOTANICAL GAZETTE [june 



LITERATURE CITED 



1. Bredig, G., and Ikeda, K. I., Anorganische Fermente II. Zeitschr. 

 Physikal. Chem. 37:8-16. 1901. 



2. Chapman, A. C, The colorimetric estimation of hydrogen cyanide. 

 Analyst 35:469-477. 1910. 



3. Geppert, J., tJber das Wesen der Blausaurevergiftung. Zeitschr. Klin. 

 Medicin 15:208-307. pi. i. 1889. 



4. LoEVENHART, A. S., and Kastle, J. H., On the catalytic decomposition of 

 hydrogen peroxide and the mechanism of induced oxidations. Amer. 

 Chem. Jour. 29:397-436. 1903. 



5. Mathews, A. P., The action of ether on an anaerobic animal tissue. Jour. 

 Pharmacol, and Exper. Therapeutics 2:231-238. 1910. 



6. Mathews, A. P., and Walker, S., The action of cyanides and nitrites on 

 the spontaneous oxidation of cystein. Jour. Biol. Chem. 6:29-37. 1909. 



17. , The spontaneous oxidation of cystein and the action of iron and 



cyanides upon it. Journ. Biol. Chem. 6:289-298. 1909. 



8. ScHONBEiN, C. F., iJber das Verhalten der Blausaure zu dem Blutkorper- 

 chen und den Ubrigen organischen das Wasserstoffsuperoxide kataly- 

 sirenden Materien. Zeitschr. Biol. 3:140-144. 1867. 



9. ScHROEDER, H., Uber den Einflusse des Cyankaliums auf die Atmung von 

 Aspergillus niger. Jahrb. Wiss. Bot. 44:409-481. 1907. 



ID. Vernon, H. V., The effect of hydrocyanic acid. Jour. Physiol. 35: 7o-73- 

 1906. 



11. ViEHOVER, A., and Johns, C. O., Determination of small amounts of 

 hydrocyanic acid. Jour. Amer. Chem. Soc. 37:601-607. 1915. 



12. ViEHOVER, A., Johns, C. O., and Alsberg, C. L., Cyanogenesis in plants. 

 Jour. Biol. Chem. 25:141-150. 1916. 



13. Willaman, J. J., The estimation of HCN and the probable form it occurs 

 in in Sorghum vulgare. Jour. Biol. Chem. 29:25-45. 1917. 



