Though generally of a mild character, it is persistently recurrent, and slowly saps and wears out the constitution; too often it is virulent and rapidly fatal.
Roland's experience demonstrated that not cold but heat is the agent which saps the constitution of the silkworm and makes it a ready prey to disease.
Saps were then pushed on against Erh-Lung, and to help in their progress a Russian advanced work called " G " was captured on the 16th, by a skilfully combined attack of infantry and artillery.
treat of the sea and the dry land: they discourse of the seas, the ocean and the great rivers, agricultural operations, metals, precious stones, plants, herbs, with their seeds, grains and juices, trees wild and cultivated, their fruits and their saps.
For sorrow results in death, and sorrow of heart saps one's strength.