Urna in the Octant [=Z] [=X] [=Y] Moles „ „ [=Z] X [=Y] Plebs „ „ [=Z] X Y Frenum „ „ [=Z] [=X] Y Uncus „ „ Z [=X] Y Pallor „ „ Z X Y Bidens „ „ Z X [=Y] Ostrum „ „ Z [=X] [=Y] The names used for the cubes, as they are before us, are as follows:-- THIRD BLOCK. Third { Arcus Mala Ovis Mala Portio Mala Floor. { Laurus Mala Tigris Mala Segmen Mala { Axis Mala Troja Mala Aries Mala Second { Postis Mala Clipeus Mala Tabula Mala Floor. { Orcus Mala Lacerta Mala Testudo Mala { Verbum Mala Luctus Mala Anguis Mala First { Telum Mala Nepos Mala Angusta Mala Floor. { Polus Mala Penates Mala Vulcan Mala { Cervix Mala Securis Mala Vinculum Mala SECOND BLOCK. Third { Ara Mala Vomer Mala Pluma Mala Floor. { Praeda Mala Sacerdos Mala Hydra Mala { Cortex Mala Mica Mala Flagellum Mala Second { Pilum Mala Glans Mala Colus Mala Floor. { Ocrea Mala Tessera Mala Domitor Mala { Cardo Mala Cudo Mala Malleus Mala First { Agmen Mala Lacus Mala Arvus Mala Floor. { Crates Mala Cura Mala Limen Mala { Thyrsus Mala Vitta Mala Sceptrum Mala FIRST BLOCK. Third { Mars Mala Merces Mala Tyro Mala Floor. { Spicula Mala Mora Mala Oliva Mala { Comes Mala Tibicen Mala Vestis Mala Second { Ala Mala Cortis Mala Aer Mala Floor. { Uncus Mala Pallor Mala Tergum Mala { Ostrum Mala Bidens Mala Scena Mala First { Sector Mala Hama Mala Remus Mala Floor. { Frenum Mala Plebs Mala Sypho Mala { Urna Mala Moles Mala Saltus Mala Their colours can be found by reference to the Models 1, 9, 2, which correspond respectively to the First, Second, and Third Blocks. Thus, Urna Mala is Gold; Moles, Orange; Saltus, Fawn; Thyrsus, Stone; Cervix, Silver. The cubes whose colours are not shown in the Models, are Pallor Mala, Tessera Mala, and Lacerta Mala, which are equivalent to the interiors of the Model cubes, and are respectively Light-buff, Wooden, and Sage-green. These 81 cubes are the cubic sides and sections of the tessaracts of an 81 tessaractic Set, which measures three inches in every direction. We suppose it to pass through our space. Let us call the positive unknown direction Ana (_i.e._, +W) and the negative unknown direction Kata (-W). Then, as the whole tessaract moves Kata at the rate of an inch a minute, we see first the First Block of 27 cubes for one minute, then the Second, and lastly the Third, each lasting one minute.