A aj bj cj dj ej fj gj hj ij jj kj lj mj nj oj pj qj rj sj tj uj vj wj xj yj zj
B ak bk ck dk ek fk gk hk ik jk kk lk mk nk ok pk qk rk sk tk uk vk wk xk yk zk
C al bl cl dl el fl gl hl il jl kl ll ml nl ol pl ql rl sl tl ul vl wl xl yl zl
D am bm cm dm em fm gm hm im jm km lm mm nm om pm qm rm sm tm um vm wm xm ym zm
E an bn cn dn en fn gn hn in jn kn ln mn nn on pn qn rn sn tn un vn wn xn yn zn
F ao bo co do eo fo go ho io jo ko lo mo no oo po qo ro so to uo vo wo xo yo zo
G ap bp cp dp ep fp gp hp ip jp kp lp mp np op pp qp rp sp tp up vp wp xp yp zp
H aq bq cq dq eq fq gq hq iq jq kq lq mq nq oq pq qq rq sq tq uq vq wq xq yq zq
I ar br cr dr er fr gr hr ir jr kr lr mr nr or pr qr rr sr tr ur vr wr xr yr zr
J as bs cs ds es fs gs hs is js ks ls ms ns os ps qs rs ss ts us vs ws xs ys zs
K at bt ct dt et ft gt ht it jt kt lt mt nt ot pt qt rt st tt ut vt wt xt yt zt
L au bu cu du eu fu gu hu iu ju ku lu mu nu ou pu qu ru su tu uu vu wu xu yu zu
M av bv cv dv ev fv gv hv iv jv kv lv mv nv ov pv qv rv sv tv uv vv wv xv yv zv
N aw bw cw dw ew fw gw hw iw jw kw lw mw nw ow pw qw rw sw tw uw vw ww xw yw zw
O ax bx cx dx ex fx gx hx ix jx kx lx mx nx ox px qx rx sx tx ux vx wx xx yx zx
P ay by cy dy ey fy gy hy iy jy ky ly my ny oy py qy ry sy ty uy vy wy xy yy zy
Q az bz cz dz ez fz gz hz iz jz kz lz mz nz oz pz qz rz sz tz uz vz wz xz yz zz

“See!” exclaimed Kennedy, triumphantly, working rapidly.  “Take the word ‘war’ for instance.  The square which contains wa is in line S, column D. So I put down sd.  The odd letter R, with a dash, is in line R, column Y. So I put down ry.  War thus becomes SDRY.  Working it backward from SDRY, I take the two letters sd.  In line S, column D, I find wa in the square, and in line R, column Y, I find just R—­making the translation of the cipher read ‘War.’  Now,” he went on, excitedly, “take the message we have: 

“SOWC FSSJWA EKNLFFBY WOVHLX IHWAJYKH 101MLEL EPJNVPSL WCLURL GHIHDA Elba.

“I translate each pair of letters as I come to them.”  He was writing rapidly.  There was the message: 

Have located New York headquarters at 101 Eveningside Avenue, Apartment K. Kennedy did not pause, but dashed from the room, followed by Grady and myself.

As our taxi pulled up on the avenue, we saw that the address was a new but small apartment-house.  We entered and located Apartment K.

Casting about for a way to get in, Craig discovered that the fire-escape could be reached from a balcony by the hall window.  He swung himself over the gap, and we followed.  It was the work of only a minute to force the window-latch.  We entered.  No one was there.

As we pressed after him, he stopped short and flashed his electric bull’s-eye about with an exclamation of startled surprise.  There was a fully equipped chemical and electrical laboratory.  There were explosives enough to have blown not only us but a whole block to kingdom come.  More than that, it was a veritable den of poisons.  On a table stood beakers and test-tubes in which was crushed a paste that still showed parts of the red ruttee beans.