We annex a summary of the news received each day this week from Afghanistan.

SATURDAY.

     The Daily News' Lahore correspondent says it is stated at Simla that
General STEWART'S orders are definite to retire from Cabul early next week to Gundamuk.   The force remains at Gundamuk as an army of observation.

     The Times' Candahar correspondent, telegraphing on the 2nd , says-"Allis well.  There are no signs of the enemy.  We have demolished all thebuildings round the city.   All the Afghans have been expelled.  We have3500 infantry, 1000 cavalry, and 15 guns.   The heat is very great.   Themajority of the officers of the 66th Regiment were killed defending thecolours, which were lost, as were also those of the Grenadiers."

     The Standard's Bombay correspondent says.-"Opposition to the Candahar force is looked for at Ghunznee, and, in fact, throughout the march.  Sherpur will be evacuated next week, when the whole of the remainder of the British force will move down on their way to India.  The heat in the passes is most terrible, and the sacrifice of life will be probably very great.

It is considered that at any rate, if evacuation be determined upon, the
force should have remained at Cabul until ROBERTS had passed Ghunznee.  The condemnation of the hurried retreat taken is universal and absolute."

MONDAY.

     On Saturday, the Viceroy received from Colonel St. JOHN, at Candahar, a message, to the effect that AYOOB was reported to be at Koh Karan (four miles south-west of Candahar).  It was estimated that of 2800 forming BURROWS'S force, 1100 lost their lives.  No news had been received from our little force shut up in Khilat i-Ghilzai.

     On Saturday General ROBERTS left Cabul with 10,000 men, for the relief of Candahar.   He went via the Logar, right through the heart of the most hostile country.

     Speaking of the determination of the Government to evacuate Cabul
entirely this week, the Times' Calcutta correspondent says it is everywhere regarded with surprise.  The anxiety to get out of the country, doubtless pressed upon the Viceroy by the Home Government, has been allowed to over-ride all considerations.

TUESDAY.

     General PHAYRE hopes to advance from Quetta to the relief of Candahar ten days hence.   He will take 5000 men, including two regiments of British infantry and one of cavalry.  The tribes are rising between the Kojak Pass and Candahar.  The roads are in a dusty state, no rain having fallen since 1878.   On the 6th AYOOB, with 20,000 men, was at Ka Koran, six miles from Candahar.  He has lost his best men in the battle.  General PRIMROSE writes that he is fit for two months' siege.   Our losses in BURROWS'S engagement are not so great as previously supposed.  They are now found not to exceed
one thousand in killed, wounded, and missing, including twenty-one officers.

The Viceroy, telegraphing on Sunday, said-"Following from GRIFFIN, at Cabul, 7th August-'I believe the withdrawal to Gundamuk of our troops and ROBERTS'S march to Ghunzee will be without any opposition whatever.   Candahar news has necessarily caused much excitement, but we have counteracted it, and yesterday I received most friendly letters from Mushki Alum and Mohamed Jan.'"  

 The Viceroy, telegraphing on Monday, says-"Major WHITE, the
military Secretary to the Viceroy, having joined his regiment, the 92 nd
Highlands, with ROBERTS'S Division, reports-'Magnificent force; could go anywhere.'"

     In connection with the movements on foot we may give the principal
distance; and first, as to the relieving column from the south, under
General PHAYRE, who is now at Quetta.  The distance from Quetta to Chaman at the end of Kojak Pass, is 60 miles; and from Chaman to Candahar, 90 miles.  In respect to the relieving force from the north, under General ROBERTS, the distance from Cabul to Ghuzee is 88 miles; and the distance from Ghuznee to Kelat-Ghilzai is about 100 miles, and from Candahar to Kelat-Ghilzai is about 90 miles, making the whole distance from Cabul to Candahar about 320 miles, which General ROBERTS expects to do in 25 days.

WEDNESDAY.

     The latest news from Candahar is dated the 5 th inst.  AYOOB'S army had not arrived before the city, which is, however, surrounded by large numbers of tribesmen, who do their utmost to intercept letters, rendering communication with the garrison very difficult.   Every preparation has been made to repel the attack of the enemy.  Food, water, and ammunition are in abundant supply.   The troops under General PHAYRE are assembling rapidly at Quetta.   The actual date of the advance has not yet been fixed.   On the 9th inst. Chaman was safe.  On Monday General ROBERTS' force marched sixteen miles.  Supplies were coming in plentifully through the Ameer's agents. There is no gathering of any importance at Ghuznee, which was five marches
distant, but several native leaders are in the city.

THURSDAY.

      Yesterday, Sir Donald STEWART effected the withdrawal of all troops from Cabul.   The Ameer paid him a visit before he left.

     The troops at Candahar are in excellent health and spirits. The
movements of AYOOB KHAN are paralysed by the dissensions among his troops, who have quarreled about the division of the booty they gained after the defeat of General BURROWS, and when AYOOB rode in between the infuriated soldiers he was wounded.   The anxiety which will necessarily be felt as to the column of General ROBERTS, deprived as it is of its base at Cabul by the withdrawal of General STEWART'S force, will be much increased by the announcement that the force carries only five days' provisions.   This news, if true, is really alarming.  A small force can without much difficulty collect sufficient food and forage from the country through which it marches.   But General ROBERTS has with him in all 18,000 men and 4000
animals, a number difficult to feed, without the regular formation of
depots, even in a friendly country.   Should the tribes rise, as there is
too much reason to believe that they will do, drive off their flocks and
herds, and destroy their corn magazines, it is difficult to see how this
large number of men and animals are to exist.