Figure It Out
by Kegler

Ten answers are too long too fit into the grid.  Removing the proper letters will leave a new word to enter; the removed letters, in clue order, will form a somewhat self-descriptive instruction.

Across 1 Food is cold? For what reason? 4 General acceptance of post office correspondence sent around mid-July 10 Row involving husband and a famous southern belle 12 Cover includes one dance 13 Turning, Mr. Rogers catches retreating lab animal 14 Jazzman Chick's got Nikon's ultimate lens cap? 15 Small-scale clothing real attractive 17 Adult enters places with accomodations for the audience 18 Disheartening sexually explicit works, with music by Beethoven 21 Lists birds having only one egg 23 Surprisingly near a stadium 25 Escort to the door a group of clients? How outre! (2 wds) 27 One setting one's cap, perhaps, for couple of minxes bathing in quantity of liquid 31 Again study rings circling head of vulture (2 wds) 33 Start to take Turkish official around edge of Iceland's subarctic forest 35 Troublemaker participates in envelope stuffing 37 Lack of vitality of one enemy's leader, last seen on the battlefield 38 Cross instructor at first trains dogs 39 Per Rev. Spooner, take care of Eden resident's piece of furniture 40 Golfer Palmer with RN's orphan on Broadway 41 Sampras is holding staff backwards, with special handles? (2 wds) 42 Wanders about with alumni right away

Down 1 Colleagues of heifer and swine not quiet 2 Empty hogwash relating to you and me in a moment of truth (hyph) 3 Dresser finally inside, placed one foot back; that'll be all (3 wds) 4 Henry's last is average-sounding? 5 Delicate condition initially described by song 6 Runs are hard to come by 7 Recite “Excited by Nathaniel” 8 Supporter, first and last, of tough means of enforcement 9 Ultimately mislay direction, part of a bread recipe 11 One of the Musketeers garbled oaths 16 Wildly regale club with gusto 17 Noted uncle, clinging to wife, didn't sink? 19 Subordinate interrupted by second line to the audience 20 Primarily responsible for answer in art publication 22 Soldier with energy climbing mountain 24 Some theaters use a short broadcast 26 Foreign tenor I show the ropes to 28 Satisfactory cuts reversing net cost of transportation? 29 It might be stuck in a corner of street map, unfortunately? 30 Indian royalty jogged with engineer (var) 32 Gore seen in half of videos is real 34 Language featured in “Anger Management” 35 Friend Mary's introduction is a source of dates 36 Endless flurry of activity in resorts

Solution