288 DANIEL BERNOULLI. 



he does not discriminate between a maximum and a minimum. 

 The equation which is obtained for determining iK is a cubic, 

 and thus it is conceivable that there may be two minima values 

 and one maximum, or only one minimum and no maximum. 



Euler seems to have objected to the wrong part of Daniel 

 Bernoulli's method ; the particular law of probability is really the 

 arbitrary part, the principle of making the product of the pro- 

 babilities a maximum is suggested by the Theory of Probability. 



Euler illustrates his method by an example derived from real 

 observations. 



