The sling was a very efficacious and important instrument in ancient warfare.

Acts are very efficacious, O king, and nothing else so, O Yudhishthira!

The way in which she gave her counsel on such occasions was very efficacious.

But the other mode, if a step be well taken, may be very efficacious.

However, in Prada's eyes such accusations were not only fair play but also very efficacious.

The fresh wort made from malt seems to have been very efficacious in arresting the malady.

The waters of the last-named place proved, he says, very efficacious both to my beloved M.Y.

This prudent measure was not very efficacious, as only ten departments remained faithful to the Jacobins.

I can say from experience, that it is a powerful sudorific, and very efficacious in a cold.

Ripley, this isn't a very efficacious idea.

This is certainly an odd way of catching fish, but it is often a very efficacious method.

Horses' skulls, however, are deemed very efficacious.

As it happened, this particular lie had been very big, very efficacious, and the cause of boundless troubles.

The sling probably never proved very efficacious, as its accuracy for birds on the wing is too uncertain.

The claws and whiskers are carefully removed and sold as fetiches, since they are considered to be very efficacious.

During the last twelve months Sir Louis Scatcherd had been very efficacious in bringing trouble, turmoil, and vexation upon Greshamsbury.