Now, however, they must be regarded as co-existing phenomena.
But co-existing with such spiritual bankruptcy as was also unexampled, one would hope.
It is only by breeding the two insects that it can be determined whether this is a case of a co-existing variety or of dimorphism.
Explanation must always consist in discovering an immediate connection between some fact and some co-existing or preceding fact.
The idea of a substance is a complex of various simple ideas united in one subject and co-existing together.
Either feature alone would be easily accounted for; but the two co-existing in the same document are more baffling.
What else are these than persistent contractions or tonic tics, alternating or co-existing with jerking movements or clonic tics?