Yupp he tricked the Confederate forces into starving the garrisson and forcing their Commander-in-Chief into attempting to send them food..
First Lincoln in Dec of 1860 sent Gen Scott instructions:
Lincoln 12 December 1860
"Please present my respects to the general, and tell him, confidentially, I shall be obliged to him to be as well prepared as he can to either hold or retake the forts, as the case may require, at and after the inauguration."
Since Anderson was drawing daily supplies from Chalreston that increased he logistical base, and the US Governemnt had entered into a legal treaty not to reinforce Sumpter of Pickens, in exchange for opening up the Miss for commece, when the orders were sent to reinforce Pickens, POCSA ordered no more supplies to be drawn by Anderson.
Lieutenant General Scott: Executive Mansion, March 9, 1861.
My dear Sir: On the 5th inst. I received from the Hon. Joseph Holt, the then faithful and vigilant Secretary of War, a letter of that date, inclosing a letter and accompanying documents received by him on the 4th inst. from Major Robert Anderson commanding at Fort Sumpter [Sumter] South Carolina; and copies of all which I now transmit. Immediately on the receipt of them by me, I transmitted the whole to you for your consideration; and the same day you returned the package to me with your opinion endorsed upon it, a copy of which opinion I now also transmit to you. Learning from you verbally that since then you have given the subject a more full and thorough consideration, you will much oblige me by giving answers, in writing, to the following interrogatories:
1st To what point of time can Major Anderson maintain his position at Fort Sumpter [Sumter], without fresh supplies or reinforcement?
2d. Can you, with all the means now in your control, supply or re-inforce Fort Sumpter [Sumter] within that time?
3d If not, what amount of means and of what description, in addition to that already at your control, would enable you to supply and reinforce that fortress within the time?
Please answer these, adding such statements, information, and counsel as your great skill and experience may suggest. Your obedient Servant A. LINCOLN.
http://hd.housedivided.dickinson.edu/node/25262
Fort Sumter.
The President has done me the honor to address to me certain professional questions, to which he desires answers. I proceed with them categorically.
"1. To what point of time can Major Anderson maintain his position, at Fort Sumter, without fresh supplies or reinforcements?"
Answer. In respect to subsistence, for the garrison, he has hard bread, flour & rice for about 26 days, & salt meat (pork) for about 48 days; but how long he could hold out against the whole means of attack which the South Carolinians have in, & about the city of Charleston & its Harbour, is a question that cannot be answered with absolute accuracy. Reckoning the batteries troops at 3,500 (now somewhat disciplined) & the batteries at 4 powerful land, & at least one floating -- all mounting guns & mortars of large calibre, & of the best patterns; -- & supposing those means to be skillfully & vigorously employed -- Fort Sumter with its less than 100 men -- including common laborers & musicians -- ought to be taken by a single assault, & easily; if harrassed perseveringly for several previous days & nights by threats & false attacks, with the ability -- from the force of overwhelming numbers -- of converting one out of every three or four of those, into a real attack.
"2. Can you with all the means now in your control, supply or reinforce Fort Sumter within that time?"
Answer. No: Not within many months. See answer to No. 3.
"3. If not, what amount of means, & of what description, in addition to that already at your control, would enable you to supply & reinforce that fortress within the time?"
Answer. A fleet of war vessels & transports, 5,000 additional regular troops & 20,000 volunteers, in order to take all the batteries in the Harbor of Charleston (including Ft. Moultrie) after the capture of all the batteries in the approach or outer Bay. And to raise, organize & discipline such an army, would require new acts of Congress & from six to eight months.
Respectfully submitted.
Winfield Scott.
Head Qrs. of the Army,
Washington, Mar. 11, 1861.
On returning from the inugriation, Lincoln was presented with this from anderson report.[4 March 1861] there came a letter from Major Anderson to John T. Morse, Jr "There were shut up in the fort together a certain number of men and a certain quantity of biscuit and of pork; when the men should have eaten the biscuit and the pork, which they would probably do in about four weeks, they would have to go away. The problem thus became direct, simple, and urgent."
Catton lists on inagriation day the QM report passed on by Anderson (Catton This Hallowed ground page 17) "there were 6 barrells of flour, 6 more or hard tack,3 of sugar, 2 vinager,24 salt pork and odds and ends".
Dailly rations are 18 ounces meat, 20 flour per man, 82 men therfore predicts a know half or full ration limit to those stores. Barrels are 240lbs capacity, hard tack might be the only unkown without a little work, i can worth out the calorific contect on bread (3lbs is 3500 calories or so from memory)etc to see if they were starving, which is what Northern papers purport but not from Andersons and his QM do you read this level, besides, he had the ability to procure any and all stores from charleston untill these were stopped.
So, Flour 6*240=1440 pounds *16=23040 ounces, Consumption at 20*82men per day =1640, which is 14 days full ration of bread.
24 Salt pork: 24*240*16=92160. Consumption 18*82=1476, which is 62 days.
6 hard tack: 6*240=1440*16=23040 ounces.Consumption at 16*82=1312. Which is 18 days.
Sugar 3*240*16=11520, Consumption 82*1.5=123, Which is 93 days.
Information given by the QM report to Lincoln and cabinet, on 4th March, shows that the Garriosn had 62 days of meat at full rations and grains for 32 days and sugar for 93.
First of April, Second Lieutenant Norman J. Hall ( QM at Sumpter) reported to Anderson that there was "at least thirty-five days of comfortable subsistence for the command."
It is a fact the Garrison had more supplies after roughly a months siege, Anderson giving POTUS that he has 4 weeks (28days) on 4th March, and has 35 days on 1 April, and POTUS elect had already chosen to retake the Fort back in Dec irespective of circumstances.