OXYGEN (Plate VIII, 4). This was examined by us in 1895, and the description may be reproduced here with a much improved diagram of its very peculiar constitution. The gaseous atom is an ovoid body, within which a spirally-coiled snake-like body revolves at a high velocity, five brilliant points of light shining on the coils. The appearance given in the former diagram will be obtained by placing the five septets on one side on the top of those on the other, so that the ten become in appearance five, and thus doubling the whole, the doubling point leaving eleven duads on each side. The composition is, however, much better seen by flattening out the whole. On the proto level the two snakes separate and are clearly seen. OXYGEN: Positive snake { 55 spheres of 2 atoms } { + 5 disks of 7 atoms } 145 Negative snake " 145 ---- Total 290 ---- Atomic weight 15.87 Number weight 290/18 16.11 CHROMIUM (Plate VIII, 5) "reverts to the ancestral type," the tetrahedron; the funnel is widened by the arrangement of its contents, three spheres forming its first ring, as compared with the units in beryllium and calcium, and the pairs in strontium and molybdenum. Two of these spheres are identical in their contents--two quintets (7 _f_), a quintet (7 _j_), and two quintets (7 _e_), _e_ and _f_ being to each other as object and image. The remaining sphere (7 _b_) is identical with the highest in the calcium funnel. The remaining two spheres, one below the other, are identical with the corresponding two spheres in calcium. The central globe, as regards its external segments, is again identical with that of calcium, but in the internal segments a six-atomed triangle (7 _k_) is substituted for the calcium four-atomed one (7 _e_). CHROMIUM: 4 funnels of 210 atoms 840 Central globe 96 ----- Total 936 ----- Atomic weight 51.74 Number weight 936/18 52.00 MOLYBDENUM (Plate VIII, 6) very closely resembles strontium, differing from it only in the composition of the highest pair of spheres in the funnels and in the presence of a little sphere, containing two atoms only, in the middle of the central globe. The topmost spheres contain no less than eight subsidiary spheres within each; the highest of these (7 _e_) has four atoms in it; the next three have four, seven and four (7 _e_ _g_ _e_), respectively; the next three are all septets (7 _g_), and the last has four--making in all for these two spheres 88 atoms, as against the 48 in corresponding spheres of strontium, making a difference of 160 in the four funnels.