[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Reference works](https://indike.org/pramana/ins.reference) › [An Encyclopaedia of Indian Archaeology](https://indike.org/pramana/ins.reference.ghosh-1989) › v1.c21.s12.3 # An Encyclopaedia of Indian Archaeology v1.c21.s12.3 An Encyclopaedia of Indian Archaeology v1.c21.s12.3 - **Language:** English ### [v1.c21.s12.3](https://indike.org/pramana/ins.reference.ghosh-1989.v1.c21.s12.3) While pottery in a vertical up-draught kiln is baked hot gases rise up in the baking chamber and pass out through the chimney, inducing a natural draught of air. This draught is controlled to raise the temperature of the wood fire to 800° to 900° C in the baking chamber. But the heat within the chamber is not equally distributed. It is higher near the bottom and becomes progressively less towards the roof. Vertical down-draught kilns and horizontal kilns are better for a uniform distribution of heat within the baking chamber. In a vertical up-draught kiln the potter stacks the heavier thick-walled storage-jars at the bottom of the chamber and smaller thin-walled vessels higher up in the pile. Thus he sees to it that the heating is adequate for all the ware stacked in the kiln. - [Previous: v1.c21.s12.2](https://indike.org/pramana/ins.reference.ghosh-1989.v1.c21.s12.2) - [Next: v1.c21.s12.4](https://indike.org/pramana/ins.reference.ghosh-1989.v1.c21.s12.4) - [Up: v1.c21.s12](https://indike.org/pramana/ins.reference.ghosh-1989.v1.c21.s12) --- Source: [https://indike.org/pramana/ins.reference.ghosh-1989.v1.c21.s12.3](https://indike.org/pramana/ins.reference.ghosh-1989.v1.c21.s12.3) · Pramāṇa