ISOSEISMALS: DISTRIBUTION OF APPARENT INTENSITY. 301 
part of the brickwork being thrown out on the northeast and northwest corners of the 
tower. (Plate 118s.) The upper part of a brick gable in the central building, facing 
northerly, was thrown southerly, or into the building. The upper part of the tower 
on the northwest corner of the building to the south of the central structure was de- 
molished. (Plate 1184.) The main clock tower of the Institution, however, suffered 
no serious damage. The clock, a very unreliable one, stopt at about 5" 13". At the 
High School the walls of the upper story, particularly those facing west, were badly 
cracked and partly thrown out, so that they had to be taken down. Two large brick 
chimneys on the east roof collapsed and did much damage to the rooms below. (Plate 
119z.) 
The Barker Block, at the northwest corner of Shattuck Avenue and Dwight Way, a 
building veneered in part with brick, had a great deal of the brick facing of the upper 
part of the building, and much of a strip of tiling above the east wall, thrown down. 
(Plate 1194.) The upper part of the rear wall of the brick building at the northeast 
corner of the same streets was thrown down. The north wall of the new Masonic Temple, 
which was in course of construction at the corner of Shattuck Avenue and Bancroft 
Way, was thrown to the north and caused the collapse of certain steel girders resting 
upon it. 
The intensity of the earthquake within the city of Berkeley was by no means uniform. 
There were areas which seemed to a very considerable extent to be immune to the de- 
struction so marked in the throw of chimneys, etc., in neighboring areas. The buildings 
on the University campus, for example, sustained no serious damage, and there was not a 
single chimney thrown, altho one or two were cracked. In a belt of the city extending 
northwesterly from the vicinity of the President’s residence on the campus, the damage 
to chimneys was similarly light. This comparative immunity to destructive shock 
appears to be associated with the fact that the buildings on the campus, and in the belt 
to the northwest of it, are practically founded on rock, whereas the portion of the city 
where chimneys generally fell is on alluvium. 
The direction of the fall of chimneys at Berkeley, as elsewhere, was controlled to a large 
extent by the orientation of the houses. Chimneys usually fell nearly at right angles 
to the longer side of their cross-section, which was as a rule parallel to one of the walls 
of the house. Notwithstanding this fact, however, there was a prevailing tendency in 
the fall of chimneys to the south and east, or in the southeast quadrant. Where chim- 
neys fell to the east, they fell usually a little to the south of the line at right angles to 
the north and south wall; and where they fell south they fell similarly a little to the 
east of the normal to the east and west wall. Some square chimneys fell diagonally 
to the southeast. This was true of a rather massive 4-flue chimney on the writer’s 
house, which fell at the latter end of the shock. In many cases chimneys were 
dislocated and twisted, without being thrown down. Of 38 chimneys, the rotation of 
which was noted by observers giving their entire attention to the matter for the time 
being, 31 were rotated counter-clockwise and 7 were rotated clockwise. In some parts 
of Berkeley the rocking of the houses was sufficiently violent to make it difficult, and in 
some cases almost impossible, to stand on the floor without support. 
According to the observations of the writer, there were two maxima in the shock, with 
a lull in the interval, the second being the more violent. The movement appeared to be 
diagonal to the rectangle of his house, the longer side of which is approximately east and 
west. The throw of objects was much more to the west than to the east. This was well 
exemplified by the behavior of objects in the mineralogical museum on the third floor 
of South Hall. These are upright cases reposing on cabinets of drawers. The shelves, 
arranged in steps, are orientated north and south approximately, and face both east and 
west. On the shelves facing east very little was disturbed, while in those facing west 
