289 
such results that in1889 89,585 kilos were employed, and in 1890 242,392 
kilos in the folowing departments: Rhoéne, Isére, Ain, Saone-et-Loire, 
Cote-d@Or, Loire, Ardéche, and Dréme, and it is estimated that 500,000 
kilos will be required in 1891. 
The mixture is employed as the pure sulphide. Its efficiency is in- 
creased by inserting one portion at a distance of 10 or 12 em. from the 
stock and spreading the re-t over a hectare. About 2000-2500 hectares 
are under treatment in this way. 
For four years this mixture has been employed on 15 to 20 hectares 
at St. Etienne-la-Vauenne (Rhéne) This property was kept at its 
average rate of production by pure sulphide, but its production has 
been increased threefold bythe new treatment. Phylloxerais no longer 
found on the root, the vegetation is luxuriant, and numerous rootlets 
have appeared—a sure sign of increased vitality.—Journal of Chemical 
Inéustry for November, 1891. 
The foregoing is taken from an article by one of the champions of 
the new insecticide, and would seem to indicate that in the mixture of 
vaseline and bisulphide of carbon we have at length obtained the long- 
sought complete remedy for the Grape Phylioxera. 
The fact remains, however, that various careful experimenters in 
France, such as MM. Gastine, Marion, Vermorel, and others, have given 
the vaseline mixture thorough trial and have published their conclu- 
sions at length in various scientific and practical journals, notably Le 
Progrés Agricole et Viticole, to the effect that the vaseline, so far from 
improving and completing the action of the bisulphide of carbon, actu- 
ally hinders it, and this disadvantage increases in proportion to the 
amount of vaseline employed. The claim is admitted that the vaseline 
prevents the rapid vaporization of the bisulphide, but it is affirmed 
that the action becomes so slow or is so much checked that little benefit 
results, and the general diffusion of the vapor through the soil in suffi- 
cient quantity to be insecticidal is prevented. 
MR. KOEBELE’S RECENT SENDINGS. 
On pages 163, 164 of the current volume we recorded Mr. Koebele’s 
efforts down to November 1, 1891. The December steamer brought 
over a number of additional specimens of the two species of Orcus— 
viz, Orcus chalybeus and O. australasie—which he had found preying 
upon the Red Scale, and upon species of Chionaspis, as well as upon 
Aspidiotus rossi. He also sent a number of Scymnids, which prey 
upon the Red Scale as well as upon the Black and Flat Scales. Per- 
haps the most interesiing species sent, however, was a new species of 
Vedalia, which he found feeding in small numbers upon Jcerya purchasi. 
According to Mr. Koebele, Mr. Olliff has one specimen of the new spe- 
cies in his collection, and will soon describe it. Mr. Tryon, of Bris- 
bane, Queensland, has two specimens. The insect was met with quite 
often near Paramatta and eleven larvee were found upon one Icerya. 
