This nonbirefringence constrains the spacetime constitutive tensor to high precision to a core metric form with an axion degree and a dilaton degree of freedom.

The customary transitions of pitchstone are, into Chalcedony, Chert, Semi-opal; also into a substance resembling conchoidal shining jasper, found in clay strata, entangled in trap, or volcanic rock; and lastly, into Trap.

In Chew on Things – It Helps You Think: Words of Wisdom from a Worried Canine, Casey B. Worrywart, Dogtor of Philosophy, explains his window-seat views on life. He shares how he managed to deal with his own ups and downs, with matter-of-factness and humor, inspiring fellow worrywart canines (and people) to cope better.

They sat on the small airfield at Zangguy, serviced and ready to fly.