The Ombre Table

 A triangular 'Ombre Table' in use by 'Persons of Quality'

 ('The Compleat Gamester' - Richard Seymour, 1734)

Gillet

Le Jeu Du Gillet 
(translated from 'Academie Universelle Des Jeux' - 1786, Vol 2,  pp. 221-223)

The game of Gillet is played by four people who each have their own hand of cards.

The pack of cards used to play this game  is the same as the one used when playing Piquet and the cards have the same values, that is to say, the Aces are the strongest cards in the pack winning  the kings, and the kings beat the Queens, and  the Queens beat the jacks  etc.

After lifting to see who shall deal, the cards are shuffled by the dealer who gives  three cards to to each of the players one after the other, but first each player will have placed  one counter , or more if they wish, in each of two small bowls placed in the middle of the table. A counter is worth whatever the players wish it to be worth.

One of the bowls (it makes  no difference which) is for the 'Ge' which is played for first. A 'Ge' is two Aces, two Kings, two Queens or two Knaves etc. The lowest 'Tricon' (three of a kind)  is better than and beats the highest Ge (pair).

When the 'Ge' has been won, you then come to the second bowl which is for the  'point'  or 'flux'. It is up to the first player as to whether to go on a simple game, or whether to raise  (renvier)  the bet by any amount they choose. The second player once the first has spoken may increase the the bet, or yield without playing if their hand is not good enough to do so.

Two Aces in hand are worth  20.5

An Ace and a king (or another 10 point card) of the same suit are worth  21.5

Two Aces and a king (or another 10 point card) of the same suit are also worth 21.5

Others cards score according to their value, but they have to be of the same suit in order to count the numbers of several different cards together.

After the betting  (le renvi) has been pushed as far  they wish, those who have stayed in show their hands, whether they have a flux or not.

To have a 'flux'  means to have three cards of the same suit such a three hearts or three diamonds etc.. We say that the highest point always wins because he who has the  highest 'Flux'  always has the highest  'point'.

Footnote

This game variously known as 'Giele', 'Gelai', 'Je l'ai'  is one of the closest relatives to the card game  known as  'Post & Pair' in Elizabethan England.