Good afternoon, crossword fans — welcome to Week 181 of my contest. If you’re new to the contest and would like to enter, please see the site FAQ on the left sidebar for instructions.

LAST WEEK’S RESULTS:

341 solvers found Louis PASTEUR as our contest answer scientist last week. The puzzle’s theme featured four phrases, each of which began with a chemical element:

20-a [Numismatist’s purchases (1,4)] are PLATINUM COINS
27-a [Little Boy was one (6)] is URANIUM BOMB
43-a [Plastic surgeon’s tool (5,7)] is an ERBIUM LASER
49-a [With 54-down, 1944 Cary Grant comedy (2,3)] is ARSENIC AND OLD / LACE

Take the chemical symbols of these four elements (Pt, U, Er, As), pop them into the parenthetical numbers in the clues, and you get Monsieur PASTEUR, n’est-ce pas? Naturellement.

This week’s winner, whose name was chosen at random from the 341 correct entries received, is Bill McCoy of Iowa City, Ia. In addition to a MGWCC pen, pencil and notepad set, Bill will also receive a copy of my new book 20 Minute On-the-Road Crossword Puzzles. Weekly winners throughout November will receive either the same or its companion book 20 Minute While-You-Wait Crossword Puzzles.

SQUARESVILLE:

Nice 19×19 by Jeffrey Harris at his site, where he posts a new puzzle each fortnight. This one took me 12:18, which I bet you can’t beat.

http://www.janglerspuzzles.com/?p=82

THIS WEEK’S INSTRUCTIONS:

This week’s contest answer is a familiar three-letter exclamation. E-mail it to me at crosswordcontest@gmail.com by Tuesday at noon ET. Please put the contest answer exclamation in the subject line of your e-mail.

To print the puzzle out, click on the image below and hit “print” on your browser. To solve using Across Lite either solve on the applet below or download the free software here, then join the Google Group (1,604 members now!) here. To solve with friends at Team Crossword, click here.

Solve well, and be not led astray by words intended to deceive.