38 NATURE 
[ApriL 8, 1897 
immense concrete pillar on which the equatorial rests. 
In addition to the laboratories already mentioned, there 
is an institute for physics, for photography, a workshop 
NO. 1432, VOL. 55} | 
for modelling in clay and plaster, in connection with 
the course on architecture ; a workshop for working on 
metal and wood, in connection with the mechanical 
