Cytological studies of the silicon diatomic cell wall, exhibiting the most beautiful diatoms appearance, are presented by Karsten and Holzinger, by Witkowski, and by others.

The astronomer calculated the inclination of the equator or ecliptic of Earth and the orbital planes of each visible heavenly body.

Actio personalis moritur cum persona. – A personal action dies with the person. [i.e. An action merely personal, arising ex delicto, for a tort, but not an action arising ex contractu, from contract. …]

Here, in the transept and choir, where the service was being held, one was conscious every moment of an increasing brightness; colours glowing vividly beneath the circular chandeliers, and the rows of small lights on the choristers' desks flashed and sparkled in front of the boys' faces, deep linen collars, and red neckbands.