Scent bottles and other gun terms...

I love writing, but sometimes research takes the cake. I'm getting ready to start the second Pru Marlowe pet noir and have been immersed in the world of antique guns. In some ways this is silly: the collectible that appears in the first scene of this next book will probably not be seen again after page 30. But I want to get it right. And besides, when you start researching something esoteric like