Similar experience was adduced by the working of the state telegraphs in Switzerland and in France.
Mention may be made of Stahelin's Leben Davids (Basel, 1866), still valuable for the numerous parallels adduced from oriental history; Cheyne's Aids to Devout Study of Criticism (1892), a criticism of David's history in its bearing upon religion; Marcel Dieulafoy, David the King (1902), full, but not critical; H.
Chun and Woltereck, on the other hand, regard the stem as a stolo prolifer arising from the aboral pole, that is to say, from the ex-umbrella, similar to that which grows out from the ex-umbral surface of the embryo of the Narcomedusae and produces buds, a view which is certainly supported by the embryological evidence to be adduced shortly.
Good cytological evidence has been adduced in favor of both theories, but further investigation is necessary before any definite conclusion can be arrived at.
But admitting the validity of this criticism, and even going so far as to question the possibility of ever devising absolutely inclusive and, at the same time, exclusive definitions, no sufficient reason is adduced for giving up all attempt at morphological analysis.