ALUMINUM. 



Clarke applied this same process to cadmium sulphate. 



Essentially the same process is underlying the work of 

 Stas; the method of the least squares, was most fully 

 applied by our own Clarke, though Ostwald and Van der 

 Plaats went quite far enough into that labyrinth of error. 



But when chemists are fool enough to take the Mean 

 as very nearly the true value, and the " probable error of the 

 mean" as about the distance from that mean to the true 

 value we can expect anything absurd. 



Hardin, 1896, has subjected small amounts of acetates 

 and benzoates to electrolysis. His mean for the first is 34 

 low, corresponding to 1.6 tenths low or 107.84. This cor- 

 responds exactly to Stas, for the true N=ri4. Possibly 

 selection of results was made, using Stas as standard; 

 Hardin has admitted practicing selection (see p. 100) and 

 fears the oracle at Washington. 



Silver Nitrate, Chloride, and the entire Mixtum Compos- 

 itum of StaS) 1860-1882, wet and dry, must be definitely 

 placed in die Chemische Rumpelkammer, as we have shown 

 with sufficient detail in this work and in our True Atomic 

 Weights, namely, pp. 70-138. 



Methods that have been demonstrated to be fallacious, 

 must be set aside and thrown out from Chemical Science 

 forever. 



Al = 27. ALUMINUM. 



Ammonium Alum, Am2 Al2 (O* 8)4 -j- 24 Hz 0=906. 

 Mallet, 1880, used two finely crystallized samples A and B, 

 of which he deems A the best chemically. Ignition leaves 

 Ah Oa = 102. 



Hence, atomic ratio o. n 258, with 20 high for 27.1. 



Mean of five determinations lot A was 14 high with a 

 range of 12, all high (from 8 to 20). 



The mean would correspond to 27.07. 



Aluminum SulpJiate, Ala (O4 S)a 2^:342. Ignition leaves 

 the oxide, hence atomic ratio 0.29 825. Change 41 high. 



Baubigny, 1883, made two determinations giving 16 high 

 and 2 low; mean 7 high, corresponds to 27.017 or say 27.02. 



