If you were required to file a declaration of estimated tax for the calendar year 1961, it is not necessary to pay the fourth installment otherwise due on January 15, 1962, if you file your income tax return Form 1040, and pay your tax in full for the calendar year 1961 by January 31, 1962.

If you hold property for the production of rents or royalties you subtract, in computing Adjusted Gross Income, ordinary and necessary expenses and certain other deductions attributable to the property.

If necessary to replace both halves on grill, sear cuts and allot extra time.

If high accuracy is required in preflight leveling, it is usually necessary to integrate or doubly integrate the accelerometer outputs ( this also minimizes the noise problem ).

`` If you find it necessary, Sam, go ahead '', she said, turning on the stair.

If necessary, motoring slowly around the location of the anchor also helps dislodge it.

If the sick person wishes to receive the sacrament of penance, it is preferable that the priest make himself available for this during a previous visit ; but if the sick person must confess during the celebration of the sacrament of anointing, this confession replaces the penitential rite A passage of Scripture is read, and the priest may give a brief explanation of the reading, a short litany is said, and the priest lays his hands on the head of the sick person and then says a prayer of thanksgiving over the already blessed oil or, if necessary, blesses the oil himself.

If used for drinking, mineral supplements or mineralization is necessary.

" If the remainder of the Conservative Party could muster the electoral support necessary to form a government, then Disraeli was now guaranteed high office.

If further research confirms these relationships, it will be necessary to reclassify the rorquals.

If a larger fire is necessary, the smith increases the air flowing into the fire as well as feeding and deepening the coke heart.

If mistakes have been made, it may also be necessary to remove the whole intonaco for that area — or to change them later à secco.

If a lock, let it have been made in whatever country, or by whatever maker, is not so inviolable as it has hitherto been deemed to be, surely it is to the interest of honest persons to know this fact, because the dishonest are tolerably certain to apply the knowledge practically ; and the spread of the knowledge is necessary to give fair play to those who might suffer by ignorance.

He adds " If this highly speculative surmise be correct, it is also necessary to assume either that the existence of the door was forgotten or that the entrance was again blocked with facing stones " in order to explain why al-Ma ' mun could not find the entrance.

If police action is not sufficient to stop the guerrilla fighters, military sweeps may be necessary.

If he or she is also chief executive, he or she can thus politically control the necessary executive measures without which a proclaimed law can remain dead letter, sometimes for years or even forever.

If subdivision is necessary, periods of human technological development, such as the Mesolithic, Neolithic, and Bronze Age, are usually used.

If necessary, a second net may be clasped to the back of the net on the inside.

This can be indicated by verbal statements at the beginning of a composition, for example, " Tune Low C to C flat ", or " If necessary, tune high G to G sharp ".

If a hellbender ends up in an area of slowly moving water, not enough water will pass over its skin in a given time period, making it difficult to garner enough oxygen to support necessary respiratory functions.

If we compress data in a manner that assumes q ( X ) is the distribution underlying some data, when, in reality, p ( X ) is the correct distribution, the Kullback – Leibler divergence is the number of average additional bits per datum necessary for compression.

If the coordinates are chosen badly, the laws of motion may be more complex than necessary.

If they turned to illegality it was due to the fact that honest toil only benefited the employers and often entailed a complete loss of dignity, while any complaints resulted in the sack ; to avoid starvation through lack of work it was necessary to beg or steal, and to avoid conscription into the army many of them had to go on the run.

If " this statement is false " is denoted by A and its truth value is being sought, it is necessary to find a condition that restricts the choice of possible truth values of A.

If a lock, let it have been made in whatever country, or by whatever maker, is not so inviolable as it has hitherto been deemed to be, surely it is to the interest of honest persons to know this fact, because the dishonest are tolerably certain to apply the knowledge practically ; and the spread of the knowledge is necessary to give fair play to those who might suffer by ignorance.

If we let them go, they won't stay away, they'll find men to ride with them and they'll be back.

If the bluff failed and they ran into trouble, Brannon had told the others, they would withdraw -- and he would come after his son another time.

If the other pilots were worried, they did not show it.

If any of us miss, they can pick up the pieces.

If it were not for an old professor who made me read the classics I would have been stymied on what to do, and now I understand why they are classics ; ;

If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.

If they avoid the use of the pungent, outlawed four-letter word it is because it is taboo ; ;

If these people were denied a voice ( do they have a moral right to a voice??

If any had escaped expulsion by hiding, they certainly would not frequent the market-place.

If we examine the three types of change from the point of view of their internal structure we find an additional profound difference between the third and the first two, one that accounts for the notable difference between the responses they evoke.

Defoe then commented, `` If they Could Draw that young Gentleman into Their Measures They would show themselves quickly, for they are not asham'd to Say They want only a head to Make a beginning ''.

If his scholarship and formal musicianship were not all they might have been, Mercer demonstrated at an early age that he was gifted with a remarkable ear for rhythm and dialect.

If they are right, they will prevail of and by themselves.

If the hardships of the winter at Valley Forge were trying for healthy men, they were, of course, much more so for those not in good health.

If, the editors sometimes, dozed and printed pretentious, New, York-mind, dross, they, also printed, Malraux,, Silone,, Chiaromonte,, Gide, Bellow,, Robert Lowell, Francis Fergusson, Mary McCarthy, Delmore Schwartz, Mailer, Elizabeth Hardwick, Eleanor Clark,, and a host of, other good writers.

`` If once they become inattentive to the public affairs '', Jefferson said, `` you and I, and Congress and assemblies, judges and governors, shall all become wolves ''.

If they give him advice when he asks it, or if they perform specified duties under his direction, the nature of the U. N. will not of necessity change.

If they do as well as they did in 1960 there can be no complaint.

If they do meet and recognize one another, slap backs and embrace, the moment soon is done.