M, 68 deg.;--with wet bulb, 64 deg.. [* The following letter from Mr. Westwood to Dr. Lindley relates to specimens of this brought to England:-- "I am sorry that the state of the specimens from Sir Thomas Mitchell (or rather, I should say, the time when they were gathered) does not allow me to say much about the insect by which they are formed. It is an extremely beautiful production, quite unlike any thing I have yet seen, and is, I have no doubt, the scale of a coccus. It is of a very peculiar form, resembling a very delicate, broad, and flattened valve of a bi-valve shell, such as the genus Iridina, the part where the hinge is being a little produced and raised, and forming the cover of the coccus which secretes the beautiful material just in the same unexplained way as the scale insects form the slender attenuated scales beneath which they are born. I could not discover any insect beneath the specimens of Sir Thomas Mitchell's production in a state sufficient to determine what it really is, as I only found one or two exceedingly minute atoms of shrivelled up insects. It is extremely brittle, and looks more like dried, white, frothed sugar than any thing else."] 18TH APRIL.--A pigeon had flown last evening over our camp in a N. N. E. direction, and as the ground sloped that way, and the men believed that water was there, I rode this morning in that direction, leaving the other horses to feed in the meantime. At two miles from our bivouac I found some hollows in a scrub where the surface consisted of clay, and which evidently at some seasons contained water, although they were then dry. Polygonum grew around them, and I doubt not that after a fall of rain water would remain there some time. On riding two miles beyond, in the same direction, I found open forest land only. The country was well covered with good grass, very open, yet finely wooded. We again proceeded north-west over some fine forest land. The soil was, however, only soft red sand, and made it very heavy work for our horses drawing the watercart.