396 



Table II — Continued 



Solid, 



Liquid, ec. per i., 



or Gas, cc. per 1 



Substance 



:m. per 1., 

 cc. per 1., 



Parts per 

 Million 



Eemarks 



I). Hydrocarbons 

 Phenanthrene. . . . 



Anthracene 



Naphthalene 



Xylene 



Toluene 



Benzene 



Acetylene 



Amylene 



Ethylene 



Methane 



E. Carbon Oxides 

 Carbon Monoxide 

 Carbon Dioxide. . 



P. Mixtures 



Tar Acid 



Illuminating Gas. 



Waste 



"Waste 



Boiled Waste. . . . 



Aerated Waste . . . 



Tar 



C14H10 

 CiiHij 



CinHj 



CsHio 

 CjHj 

 CbH, 



C,H, 



CH, 



CO 



CO, 



Solid 



Solid 



Solid 



Liquid 



Liquid 



Liquid 



Gas 



Liquid 



Gas 



Gas 



Gas 

 Gas 



0.001-0.002 gm. 



0.004-0.005 gm. 

 0.055-0.056 c'c. 

 0.070-0.080 cc. 

 0.040-0.042 cc. 



Sat. sol. 

 1.000-1.250 cc. 

 18.00-20.00 cc. 



16.00 cc. 



Liquid 0.07 cc. 

 Gas 



Liquid 



Liquid 

 Liquid 



Liquid 



Liquid 



0.020-0.040 cc. 

 0.002 cc. 



4-5 

 47-48 

 61-65 

 35-37 



655-693 

 22-25 



75 



70 



20-40 

 2 



Bated "insoluble" 

 Only slightly toxici 

 Rated "insoluble" 

 Rated "insoluble" 

 Rated ' ' insoluble ' ' 

 Rated "insoluble" 

 No deaths 



Not toxic — only one 

 Labidesthes siceulus 

 died 



See Wells ' Art. 



Pts. per million by 

 volume 



Amount not deter- 

 mined 



Amount not deter- 

 mined 



To kill in 24 hour8 



Toxicity less than 

 aerated 



Toxicity less than 

 unboiled 



Rubbed on lishes, kills 

 in 18 hrs. 



Ammonia. 



The amount of ammonia in gas-waste from which it has not been 

 commercially removed is great. Champaign-Urbana Gas-works' waste 

 pumped from the holder intake showed about 200% volume in waste 

 not containing tar and 400% volume in waste containing a small 

 amount of tar. No ammonia is recovered at this plant. The intake 

 and outlet are pumped out daily, or two or three times per week. This 

 waste is pumped onto the ground and finds its wav into a small stream. 

 A solution approximately half normal (8.517 gm. per 1.) was made 

 and dilutions of this were made up quickly in 500 cc. of distilled water 

 in 750 cc. wide-mouthed glass-stoppered bottles. Fishes were Cjuickly 

 dropped in and after they had died and the time to death was noted 

 the solution was titrated with a standard acid and litmus indicator. 

 When the killing concentration was determined approximately a solu- 

 tion was made up and the results verified in the 4-liter bottle. 



