Make the cork perfectly air-tight by coating it with beeswax or paraffine.

The great secret of canning is to make the fruit or vegetable perfectly air-tight.

Seal air-tight and it will keep well one year if jars are perfectly air-tight.

I had prepared a very strong, perfectly air-tight gum-elastic bag.

Three or four days later, if perfectly air-tight, label and store in a dark place.

So closely do these two halves fit when closed that this middle tube is perfectly air-tight.

With this object in view I had prepared a very strong perfectly air-tight, but flexible gum-elastic bag.

They must be perfectly air-tight.

Now put on the lid of the box, and have it carefully soldered on, so as to make all perfectly air-tight.

Place some bits of shaving in the tube, cork it, and make the cork perfectly air-tight by coating it with bees wax or paraffine.

When the bottom of the hive is close to the floor, it forms a sealing around the edges, perfectly air-tight, and your bees are smothered.