In the next stage this material is largely collected in a luminous and hazy sphere, as we find in the nebula in Canes Venatici.
The nebula in Canes Venatici is a spiral facing towards us, and its shape irresistibly suggests motions along the spiral arms.
The most interesting specimen of a spiral nebula is situated in Canes Venatici.
There are one or two interesting things to be seen in that part of Canes Venatici which is represented on map No. 11.
The portion of Canes Venatici, represented in map No. 26, contains two or three remarkable objects.