to the Method of Least Squares. 219 



1872 WooLHOusE. ' Oil the Philosophy of Statistics.' (Jowp. to 

 AliJianac for 1872, pp. 5-22. — Zoncl Assur. 3Iag., XYII, pp. 26-30, 

 A popular article copied largely from Quetelet. 



1872 Zachariae. 'Note betrettend die Bestimmiing des mittlereii 

 Fehlers.' Astron. JVachr., Vol. LXXX, col. 67-70. 



Offers without demonstration a new formula for the mean error of 

 a base line measured in several portions. See 1873 Helmekt and 

 Jordan. 



1873 Brown. 'On the Application of the Binomial Law to Sta- 

 tistical Enquiries, illustrated by the Law of the Growth of Man at 

 different ages.' Lond. Assur. Mag., Vol. XVII, pp. 340-351. 



1873 Crookes. ' On the Proljability of Error in Experimental 

 Research.' Quart. Jour. .ScL, Vol. Ill, p]). 1-13. 



Contains some formuhi? for weights taken from 1838 DeMorgan, 

 with an application to determining the probability of error in the 

 atomic weight of thallium. 



1873 DeForest. 'On some Methods of Interpolation applicable 

 to the graduation of irregular Series, such as Tables of Mortality, 

 &c. &o.' Hep. Smithsonian Inst, for 1871, pp. 273-339; for 1873, 

 pj). 319-355. 



For continuation see below under 1876. 



1873 Helmert. ' Bestimmung des mittlern Fehlers der Laugen 

 messungen aus der Differenzen von Doppelmessungen.' Astron. 

 Nachr., Vol. LXXXI, col. 49-52. 



A comparison of the common formuljB with the one given by 

 Zachariae in 1872, showing that the latter is less accurate. 



1873 Jordan. 'Ueberdie Berechnung dermittleren Fehlers einer 

 Basismessung.' Astron. Nachr., Vol. LXXXI, col. 51-56. 

 Also a criticism on Zachariak's formula. 



1873 Zachariae. 'Ueber die Bestimmung des mittleren Fehlers 



einer in meheren Theilen doppelt gemessenen Grundlinie.' Astron. 



JVachr., Vol. LXXXI, col. 225-228. 



Defends his formula against the above. See Jahrh. Fortschr. 

 Math., Vol. V, p. 127. 



1873 Jahn. Sur la prohahilit'e du tir et la methode des momdres 

 carves. Paris, 8vo. 



