supported by twenty trasses, nine of which are broken. Tin- trasses were strengthened and supported by lateml iron girders, the-e girder.- sweeping clear across the lower partol the root, forming a continuous stretch of iron of over IS> ieet. These girder-, contracting under the intense cold and weakeaed by tiie muss of snow 011 the roof, mnsl have snapped, 1 nviiip no support for the root. Last winter these lateral girders, when the weather wa* cold, had to be loosened ap, by means of the screw nuts at the ends.