SUR LE DÉVELOPPEMENT 
O1 
D 
P—Q'+ R'— SE T'— V' +ete=p 
—Q +2R—3S" LAT/— SV" + etc. —9 
R —3S' + GT” — roV'"'+ etc. —r 
— S +AT' —roV’ Letc. —s 
T — 5V' + etc. —t 
— NV etc. —u 
Q—R'+ S'— T''+ Vr — etc. —4, 
—R +0S —3T" + 4V/'— etc. —v, 
S —3T' + GV/' — etc. —s, 
— T +4V' —etc. —1, 
V —etc. —u, 
R—S'+ T'— V''Hetc.—r,, S—T'+ V'—etc.—s;, 
—$S +2T'—3V' Letc.—s, —T +oV' —etc.—t; 
T —3V' +etc.—t, V —etc.—, 
— V +etc.—», 
T — V' +Hetc.—t, V —etc.—», 
— V +etc.—1, 
etc., 
dont la loi est manifeste ; nous aurons, en faisant les sub- 
