| (a) | - | A agrees to sell B "a hundred tons of oil". There is nothing whatever to show what kind of oil was intended. The agreement is void for uncertainty. |
| (b) | - | A agrees to sell B 100 tons of oil of a specified description, known as an article of commerce. There is no uncertainty here to make the agreement void. |
| (c) | - | A, who is a dealer in coconut oil only, agrees to sell to B "100 tons of oil". The nature of A's trade affords an indication of the meaning of the words, and A has entered into a contract for the sale of one hundred tons of coconutoil. |
| (d) | - | A agrees to sell to B "all the grain in my granary at Ramnagar". There is no uncertainty here to make the agreement void. |