[734] See above, p. [4]. [375].
[735] Recherches, 202.—In digging in my garden on the 26th of January 1817, I turned up in three or four places colonies of Myrmica rubra, Latr. in their winter retreats, each of which comprised apparently one or two hundred ants, with several larvæ as big as a grain of mustard, closely clustered together, occupying a cavity the size of a hen's egg, in tenacious clay, at the depth of six inches from the surface. They were very lively; but though Fahrenheit's thermometer stood at 47° in the shade, I did not then, nor at any other time during the very mild winter, see a single ant out of its hybernaculum.
[736] Kongl. Vet. Acad. Handling. 1816. 104.
[737] Huber i. 134.
[738] Ibid. ii. 344. 358. See above, p. [192]—
[739] Bonnet On Bees, 104.
[740] Huber, i. 354.
[741] Phil. Trans. 1790. 161.
[742] Reaum. v. 667.
[743] Ibid. 682.