There are sufficient voiceless examples to prove, were proof needed, the truth of this assertion; and their atonic condition is due to the cause mentioned.
"Style in Singing"
W. E. Haslam
Mixed with water it is used as a wash for atonic ulcers.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
The leaf juice and the bruised leaves are applied to wounds and atonic ulcers.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera