DORMER (from Lat. dormire, to sleep), in architecture, a window rising out of the roof and lighting the room in it: sometimes, however, pierced in a small gable built flush with the wall below, or corbelled out, as frequently in Scotland. In Germany, where the roofs are very lofty, there are three or four rows of dormers, one above the other, but it does not follow that the space in the roof is necessarily subdivided by floors. In some of the French châteaux the dormers (Fr. lucarne) are highly elaborated, and in some cases, as in Chambord, they form the principal architectural features. In these cases they are either placed flush with the wall or recede behind a parapet and gutter only, so as to rest on the solid wall, as they are built in stone. In Germany they assume larger proportions and constitute small gables with two or three storeys of windows. The term “dormer” arose from the windows being those of sleeping-rooms. In the phrase “dormer beam” or “dormant beam,” meaning a tie-beam, we have the same sense as in the modern “sleeper.”
DORMITORY (Lat. dormitorium, a sleeping place), the name given in monasteries to the monks’ sleeping apartment. Sometimes it formed one long room, but was more generally subdivided into as many cells or partitions as there were monks. It was generally placed on the first floor with a direct entrance into the church. The dormitories were sometimes of great length; the longest known, in the monastery of S. Michele in Bosco near Bologna (now suppressed), is said to have been over 400 ft. In some of the larger mansions of the Elizabethan period the space in the roof constitutes a long gallery, which in those days was occasionally utilized as a dormitory. The name “dormitory” is also applied to the large bedrooms with a number of beds, in schools and similar modern institutes.
DORMOUSE (a word usually taken to be connected with Lat. dormire, to sleep, with “mouse” added, cf. Germ. Schlafratte; it is not a corruption of Fr. dormeuse; Skeat suggests a connexion with Icel. dár, benumbed, cf. Eng. “doze”), the name of a small British rodent mammal having the general appearance of a squirrel. This rodent, Muscardinus avellanarius, is the sole representative of its genus, but belongs to a family—the Gliridae, or Myoxidae—containing a small number of Old World species. All the dormice are small rodents (although many of them are double the size of the British species), of arboreal habits, and for the most part of squirrel-like appearance; some of their most distinctive features being internal. In the more typical members of the group, forming the subfamily Glirinae, there are four pairs of cheek-teeth, which are rooted and have transverse enamel-folds. As the characters of the genera are given in the article [Rodentia] it will suffice to state that the typical genus Glis is represented by the large European edible dormouse, G. vulgaris (or G. glis), a grey species with black markings known in Germany as Siebenschläfer; the genus ranges from continental Europe to Japan. The common dormouse Muscardinus avellanarius, ranging from England to Russia and Asia, is of the size of a mouse and mainly chestnut-coloured. The third genus is represented by the continental lerot, or garden-dormouse, Eliomys guercinus, which is a large parti-coloured species, with several local forms—either species or races. Lastly, Graphiurus, of which the species are also large, is solely African. In their arboreal life, and the habit of sitting up on their hind-legs with their food grasped in the fore-paws, dormice are like squirrels, from which they differ in being completely nocturnal. They live either among bushes or in trees, and make a neat nest for the reception of their young, which are born blind. The species inhabiting cold climates construct a winter nest in which they hibernate, waking up at times to feed on an accumulated store of nuts and other food. Before retiring they become very fat, and at such times the edible dormouse is a favourite article of diet on the Continent. At the beginning of the cold season the common dormouse retires to its nest, and curling itself up in a ball, becomes dormant. A warmer day than usual restores it to temporary activity, and then it supplies itself with food from its autumn hoard, again becoming torpid till roused by the advent of spring. The young are generally four in number, and are produced twice a year. They are born blind, but in a marvellously short period are able to cater for themselves; and their hibernation begins later in the season than with the adults. The fur of the dormouse is tawny above and paler beneath, with a white patch on the throat. A second subfamily is represented by the Indian Platacanthomys and the Chinese Typhlomys, in which there are only three pairs of cheek-teeth; thus connecting the more typical members of the family with the Muridae.
(R. L.*)
DORNBIRN, a township in the Austrian province of the Vorarlberg, on the right bank of the Dornbirner Ach, at the point where it flows out of the hilly region of the Bregenzerwald into the broad valley of the Rhine, on its way to the Lake of Constance. It is by rail 7½ m. S. of Bregenz, and 15 m. N. of Feldkirch. It is the most populous town in the Vorarlberg, its population in 1900 being 13,052. The name Dornbirn is a collective appellation for four villages—Dornbirn, Hatlerdorf, Oberdorf and Haselstauden—which straggle over a distance of about 3 m. It is the chief industrial centre in the Vorarlberg, the regulated Dornbirner Ach furnishing motive power for several factories for cotton spinning and weaving, worked muslin, dyeing, iron-founding and so on.
(W. A. B. C.)