Probably synthetic enzymes (see Chapter XIV), whose nature and action have not yet been discovered, come into play.
These studies have not as yet been brought to the stage of final conclusions, and the ideas presented must be considered as suggestive rather than as conclusive.
No true Serpents (Ophidia) have as yet been detected in the Cretaceous rocks; and this order does not appear to have come into existence till the Tertiary period.
No remains of Mammals, finally, have as yet been detected in any sedimentary accumulations of Cretaceous age.
No example of the great Ruminant group of the Ungulate Quadrupeds has as yet been detected in deposits of Eocene age.
No actual bones of any bird have as yet been detected in any Triassic deposit; but we have tolerably clear evidence of their existence at this time in the form of footprints.
No remains of Serpents (Ophidians) have as yet beendetected in the Jurassic; but strata of this age have yielded the remains of numerous Crocodilians, which probably inhabited the sea.
In Spain, Portugal, Poland, and the Balkan States, general state systems of education have not even as yet been evolved.
Reading was very difficult to learn, as accentuation, punctuation, spacing between words, and small letters had not as yet been introduced.
His mind had as yet been troubled by but few thoughts respecting his child's future establishment.
But little has as yet been said, personally, as to our hero himself, and perhaps it may not be necessary to say much.
Their friendship, intimate as it was, had as yet been but of short date.
Although the seventeenth century has not yet been included in the dark ages, it is possible that posterity, reading these enactments, may reverse present opinion on this subject.
The title of King of Ireland had not asyet been given to English monarchs, but the ever-subservient Parliament of this reign granted Henry this addition to his privileges, such as it was.
The germination of the zygospores in this species has not as yet been observed, but it is probably the same or very similar to that observed in other species of Mucor.
In like manner the vine disease (Oidium Tuckeri) is most probably only the conidia of a species of Erysiphe, of which the perfect condition has not yet been discovered.
In Central America very small and incomplete collections have as yet been made, and the same may be said of South America and Canada.
From these are developed at their extremity three or four linear bodies, as in Tilletia, but after this no further development has as yet been traced.
It is doubtful whether any common electrical machine has as yet been able to supply electricity sufficient in a reasonable time to cause true electro-chemical decomposition of water (330.
This peculiar condition shows no known electrical effects whilst it continues; nor have I yet been able to discover any peculiar powers exerted, or properties possessed, by matter whilst retained in this state.
Neither have I in any other way asyet been able to distinguish effects attributable to such a reaction.
The retreating column of Hill meeting reinforcements that had not yet been engaged, became encouraged and returned with them.
No steps have as yet been taken by the civil authorities to arrest citizens who were engaged in this massacre, or policemen who perpetrated such cruelties.
They were in it together this moment as they hadn't yet been, and he hadn't at present uttered the least of the words of alarm or remonstrance that had died on his lips at the hotel.
The chronology of this period is a subject that has not as yet been determined, and the time when it commenced and when it ended is still unsettled.
For the purpose of holding a canoe stationary an anchor is requisite, but of these not more than three have as yet been discovered.
We have one school constantly, but have as yet been unable to do much toward improving that department, and had hoped to see something in the Harbinger which would be a guide in this branch of our organization.
To the Editor of the Circular: "Will you allow me space in your journal to say that no practical trial, and no approach to one, has as yet been made of Fourier's theory of Social Organization.
Then, too, he said something to her of the satisfaction which she herself would receive from living in London, and told her that, for her, life itself had hardly as yet been commenced.
He had spoken no word on the subject to anyone, but he had been very much disappointed when he had been married twelve months and no hope of an heir had as yet been vouchsafed to him.
Lord George had been away for a fortnight, and no reason for his departure had as yet been given to the Marchioness.
All this came of course from the Marquis, and was known by her daughters to come from the Marquis; and yet the Marchioness had never as yet been allowed to see either her daughter-in-law or Popenjoy.
No decision, however, has as yet been come to with reference to its construction being commenced at an early period.
Even in the only Indian coal-field which has as yet beenworked to any extent, namely, Raneegunge field, very much more must yet be done before safe and satisfactory conclusions can be reached as to the amount of coal and its position.
No such engine has as yet been, or is ever likely to be, constructed.
In this case, also, science has not as yet been able to introduce into an artificial stone the requisite quantity of iron to bring it the same analytically as the gem it is supposed to represent, without completely spoiling the colour.
Though Marnix describes most of them, hardly any of these paintings have as yet been identified.
As for Dierick Boudts the younger, no picture painted by him has as yet been identified.
If any of Valentine's pictures have come down to us, they have not as yet been identified.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "yet been" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
