"According to R. Solomon Jarchi, the Talmud, and Maimonides, when the priest sprinkled the blood of the victim on the consecrated cakes and hallowed utensils, he was always careful to do it in the form of a _cross_. The same symbol was used when the kings and high priests were anointed."--Faber's _Horae Mosaicae_, vol. ii. p. 188. See farther hereon, Deane on _Serpent Worship_. In _Persia_.--The trefoil on which the sacrifices were placed was probably held sacred from its cruciform character. The cross ([+]) occurs on Persian buildings among other sacred symbols. (R. K. Porter's _Travels_, vol. ii.) In _Britain_.--The cross was formed by baring a tree to a stump, and inserting another crosswise on the top; on the three arms thus formed were inscribed the names of the three principal, or triad of gods, _Hesus_, _Belenus_, and _Taranis_. The stone avenues of the temple at Classerniss are arranged in the form of a cross. (Borlase's _Antiquities of Cornwall_.) In _Scandinavia_.--The hammer of Thor was in the form of the cross; see in Herbert's _Select Icelandic Poetry_, p. 11., and Laing's _Kings of Norway_, vol. i. pp. 224. 330., a curious anecdote of King Hacon, who, having been converted to Christianity, made the sign of the cross when he drank, but persuaded his irritated Pagan followers that it was the sign of Thor's hammer. The figure of Thor's hammer was held in the utmost reverence by his followers, who were called the children of Thor, who in the last day would save themselves by his mighty hammer. The fiery cross, so well known by Scott's vivid description, was originally the hammer of Thor, which in early Pagan, as in later Christian times, was used as a summons to convene the people either to council or to war. (Herbert's _Select Icelandic Poetry_, p. 11.) EDEN WARWICK. Birmingham. {133} * * * * * PHOTOGRAPHIC CORRESPONDENCE. _Glass Chambers for Photography._--I am desirous to construct a small glass chamber for taking portraits in, and shall be much obliged if you can assist me by giving me instructions how it should be constructed, or by directing me where I shall find clear and sufficient directions, as to dimensions, materials, and arrangements. Is it essential that it should be all of violet-coloured glass, ground at one side, as that would add a good deal to the expense? or will white glass, with thin blue gauze curtains or blinds, answer? Probably a full answer to this inquiry, accompanied with such woodcut illustrations as would be necessary to render the description complete, and such as an artificer could work by, would confer a boon on many amateur photographers, as well as your obliged servant, C. E. F.