De Reaumur, and (1752-1778) of the Swede C. de Geer.
The work of de Reaumur and de Geer on the bionomics and life-history of insects has been continued by numerous observers, among whom may be especially mentioned in France J.
1694), the investigator of Polyps and the opponent of Marsigli and Reaumur, who held them to be plants; Woodward, the palaeontologist (1665-1722) - not to speak of others of less importance.
The general plan of the open-hearth process was certainly conceived by Josiah Marshall Heath in 1845, if not indeed by Reaumur in 1722, but for lack of a furnace in which a high enough temperature could be generated it could not be carried out until the development of the Siemens regenerative gas furnace about 1860.
It is true that Reaumur in 1722 described his method of making molten steel in crucibles, and that the Hindus have for centuries done this on a small scale, though they let the molten steel resolidify in the crucible.
The classical observations of Reaumur Memoires pour servir a l'histoire des insectes, vols.
De Reaumur, who "would willingly refer to the class of insects all animals whose form would not allow them to be placed in the class of ordinary quadrupeds, in that of birds, or in that of fishes.
Huber found that although he could induce swarms to occupy the glass-sided single frame advised by Reaumur, if the frame was fitted with ready-built pieces of comb patched together before hiving the swarm, the experiment was successful, while if left to themselves the bees built small combs across the space between the sheets of glass, and the desired inspection from the outside was thus rendered impossible.
Foremost among the latter was the distinguished Swiss naturalist and bee-keeper, Francois Huber, who was led to construct the leaf-hive bearing his name after experimenting with a single comb observatory hive recommended by Reaumur.