During the same period the ever-increasing traffic on the line, which had become the primary axis of the Italian railway network, began to saturate the capacity of the stations in Bologna, and a rail bypass was built to its north.
22.
This primary axis terminates in a fountain of Neptune ( known to the irreverent Florentines as the " Fountain of the Fork " for Neptune's trident ), with the sculpture of Neptune by Stoldo Lorenzi visible against the skyline as a visitor climbs the slope.
23.
The whole complex is somewhat unusual, as it is organized along three major axes; the primary axis is the ( slightly bent ) line that passes from the atrium, tablinum, peristyle and the great basilica ( coinciding with the path visitors would follow ).
24.
A small arm carries sensors that control motors that turn the arm around the two axes, so it points toward the sun . ( Thus this design incorporates a solar tracker . ) A simple mechanical arrangement bisects the angle between the primary axis, pointing to the target, and the arm, pointing to the sun.
25.
Therefore, embryologists have identified the primary axis in birds as digit IV, and the surviving digits as II-III-IV . The fossils of advanced ontogenical ( developmental ) basis to definitively state which digits are which on a theropod hand ( because no non-avian theropods can be observed growing and developing today ), the labelling of the theropod hand is not absolutely conclusive.
