BORON (Plate III, 4, and Plate XI, 1). We have here the simplest form of the cube; the funnels contain only five bodies--four six-atomed ovoids and one six-atomed "cigar." The central globe has but four five-atomed spheres. It is as simple in relation to its congeners as is beryllium to its group-members. BORON: 6 funnels of 30 atoms 180 Central globe 20 ---- Total 200 ---- Atomic weight 10.86 Number weight 200/18 11.11 SCANDIUM (Plate XI, 2). For the first time we meet funnels of different types, A and B, three of each kind; A appear to be positive and B negative, but this must be stated with reserve. In A the boron funnel is reproduced, the "cigar" having risen above its companion ovoids; but the most important matter to note in respect to this funnel is our introduction to the body marked _a_ 110. This body was observed by us first in nitrogen, in 1895, and we gave it the name of the "nitrogen balloon," for in nitrogen it takes the balloon form, which it also often assumes in other gaseous elements. Here it appears as a sphere--the form always assumed on the proto level--and it will be seen, on reference to the detailed diagram 4 _a_, to be a complicated body, consisting of six fourteen-atomed globes arranged round a long ovoid containing spheres with three, four, six, six, four, three, atoms respectively. It will be observed that this balloon appears in every member of these two groups, except boron. The B funnel runs largely to triads, _c_ and _b_, _b_ (see 4 _b_) having not only a triadic arrangement of spheres within its contained globes, but each sphere has also a triplet of atoms. In _c_ (see 4 _c_) there is a triadic arrangement of spheres, but each contains duads. B is completed by a five-atomed sphere at the top of the funnel. It should be noted that _a_, _b_ and _c_ all are constituents of nitrogen. The central globe repeats that of boron, with an additional four-atomed sphere in the middle. SCANDIUM: 3 funnels (A) of 140 atoms 420 3 " (B) of 116 " 348 Centre globe 24 ---- Total 792 ---- Atomic weight 43.78 Number weight 792/18 44.00 YTTRIUM (Plate XI, 3). Here we have a quite new arrangement of bodies within the funnel--the funnel being of one type only. Two "cigars" whirl on their own axes in the centre near the top, while four eight-atomed globes (see 4 _e_) chase each other in a circle round them, spinning madly on their own axes--this axial spinning seems constant in all contained bodies--all the time. Lower down in the funnel, a similar arrangement is seen, with a globe (see 4 _d_)--a nitrogen element--replacing the "cigars," and six-atomed ovoids replacing the globes.