Section III, 1921 [47] Trans. R.S.C. 



Nitrophthalic Anhydrides and Acetylamine-phthalic Anhydrides with 

 Toluene and Aluminium Chloride 



By W. A. Lawrance, M.A. 



Presented by Professor F. B. Allan, F. R.S.C. 



In a recent article in the Journal of the American Chemical Society 

 Lawrance has pubHshed the results of a study of the reaction of 

 these deriva,tives of phthalic anhydride with benzene and aluminium 

 chloride. A similar study, using toluene instead of benzene, has 

 given eleven new derivatives of orthobenzoyl-benzoic acid. In every 

 case the reaction with toluene takes place in the position para to the 

 methyl group. 



Bromphthalic Anhydrides with Benzene and Aluminium Chloride 



By H. N. Stephens, B.A. 



Presented by Professor F. B. Allan, F. R.S.C. 



Improved methods of preparing bromphthalic anhydrides were 

 worked out and the reaction with benzene and aluminium chloride 

 gave good yields in each case but 3-bromphthalic anhydride gave 

 only one acid product. When acetic anhydride was added in this 

 reaction the 4-bromphthalic anhydride gave two diphenyl-brom- 

 phthalides but the 3-bromphthalic anhydride gave only a trace of 

 one diphenyl-bromphthalide. 



The Effect of Certain Chemicals on the Rate of Reproduction of Yeast 



By N. A. Clark, B.S.A. 



Presented by Professor W. Lash Miller, F. R.S.C. 



Measurements have been made of the rate of reproduction of 

 yeast in malt wort to which had been added varying amounts of 

 alcohol, acetone, phenol, methyl-green, ammonium fîuoride, sodium 

 bicarbonate, acetic acid, or hydrochloric acid. In each series the 

 concentration of the substance added was increased until reproduction 

 ceased entirely. The effect of adding malt infusion in varying 

 amounts to artificial media was also studied. 



