XgO GENETIC CONNEXIONS BETWEEN THE CHEMICAL ELEMENTS. 



(4) Sn = Si Zr=:ii8-95, (5) Al. S, K, Ca^ Sc, Ti and Cr are exact 

 addition-products of glucinum, e.g., Ca = GlP, (6) €1-2 = AP — 

 yO'gz, (7) Se2=TeP, (8) Hg = 4 (Ba— Sr). Similar, but not so exact, 

 relationships are : (i) Ag F — i26*88 = l, whilst Cu.> = i27"2, (2) Cs F9 

 = Rb.; (3) KLi=Nao and KNa. = Rb. (4) Ag = RbNa. (5) Au 

 =Ag Y, (6) Ba Sr = Cd2, (7) Ca Sr = Cuo + i, (8) Ca Gl = Mgo + i-, (9) 

 Th Ti = Ceo, (10) Sb Ta=:Bi Cb. Other curious coincidences are : 

 ^[o-^fGl-H) --^^-^ • Zn- .' MgCa+H whilst Sr = CaMg. 



— H ; Ra = BaSr approximately, whilst Ba = CaMgj ; besides 

 the well-known multiple connexions among the hexads and 

 tetrads— thus S = 0o + , Se = 0,-,-, Te = 0^-, Mo^O, ; so Ti = 

 d, Ge^Ce-f-, Sn = Cio— ; alternatively Si might be C He4 and 

 Ti = C2He,3 like methane and ethane. Other interesting 

 multiple cases are : N = Lio : A = Ne.^ : Fe = N^ ; Mo = 

 Tio ; Ra = Cd-, = Fe^ ; U = Sn. : ' Pb = Rh. ;' Ta = Zro ; Ce = Ga.. ; 

 X-Zn,>; Br = Ao; Cb-Ps ; Mo = S3; Pd = Cl,; Sb:=Ca,, ; 

 Xd = Ti;; ; Os = Cus ; also A = ioHe, Ga = ioLi, Zr = ioGl, Sb = ioC, 

 Ce = ioN, Os = ioF, and Hg = ioNe. 



The genetic connexion between the elements is however best 

 proved by the existence ,of long series of elements with a constant 

 difference from a lower series. Two of these have been well 

 known, viz., the differences of about 47 and 88 between the 

 rows of the Periodic Table, but the author has noticed that the 

 tendency is present from the \-erv start of the elementary series. 



Thus He + ^, = Li : Li -l- 2 = G1 : Gl -f 2 =B 



I 



i i i 



F = 3-fO : = 2-fN : X = 2-rC 

 -fl 

 A e, -!- 3 =Xa, 4- 1 J =Mg, + 2| = Al 



i 



Al4-ii=Si, + 22=P,4-i=S.-f3i = C] 



Ca = i4-K.K = 3|-fCl 

 Ca-l-4 = Sc. 4-4 = Ti. ^-3= V. -fi = Cr 



i 



I 



Cr4-3 = Mn. 4-i = Fe. -f 3=Co. 



The series from scandium onwards is also a repetition of an 

 •earlier series: thus. Sc = Xe4-24. Ti = Mg + 23"8. \'=Al4-24, 

 Cr = Si-h23-8, Mn = P + 23-S, Fe = S-f-23-8, Co = Cl4-23-5, Cu-= 

 A 4- 23*8. This additive complex resembles magnesium both 

 in -atomic weight and, in most cases, by possessing two valencies, 

 thus changing triads into pentads and so on. Connection with 

 the next series is given by the coincidences: Xi=A4-i8*8, Co = 

 XZa 4-18-9 and Ga = V4-i8-8: also Mn = Cl-fi9i, Cu^ScH-ig-i. 

 As alseady suggested, Zn may be Mg AIN or Mg CaH, whilst 

 Ge is possibly C4 He,; and arsenic PB,. The next series is also 

 additive, thus Se = Xi4-20"5, Br = Co-l-2i. Rb = Cu4-22, Sr = 



