262 
have two generations a year. The acetylene light, une- 
qualled in power, is not blown out by wind, though burning 
without chimney glass, and ensures great success to lamp 
traps, now largely used on the continent to exterminate the 
flying pests. The agriculturists and vine-growers annihi- 
late butterflies from caterpillars devouring leaves, roots, 
grapes, turnips, fruits, flowers, and all harvests just before 
the laying time. The experiments carried on by professors 
give 2,000 moths (half females) killed in a night with a 
single lamp (Academy des Sciences Report). The lamp, 
strong, and simple to clean, gives 20 to 35 candle power 
during 6 hours, at an expense of I \d. per night, being 
immersed in a basin of water covered by a him of petroleum 
oil, the visiting insects in their diving flight drown them- 
selves. This efficient way superseding the old tedious 
methods of fumigation, or sprinkling of dangerous liquids, 
has proved the most rapid and cheapest means to protect 
the crops from thousands of insects. It is indeed a good 
investment. All the noxious insects being nocturnal this 
method can be applied to all flies and mosquitos found pro- 
pagating contagious diseases, malaria pest, or troubling 
domestic animals. Moreover these lamps are used all the 
year for lighting yards, cellars, stables, cross-roads and 
night works.” 
/ ndian Gardening and Planting. 
RUBBER PLANTING IN MEXICO. 
(A) 
This Company the “La Zacualpa” have issued in pamphlet form 
a report by E. S. Van Court, of Oakland, California, a stock- 
holder who recently visited the plantation. He states that he saw 
three 7 year old trees yield lbs. of latex at one tapping: five 
1 1 year old trees, said to have been tapped several times within 
twelve months, yielded in 20 minutes enough latex to make 2$ lbs. 
of rubber. Air. Van Court considers the Castilloa elastica very 
tenacious of life where trees had been cut down, shoots at once 
sprang up from the stumps, and where a tree had blown down, 
leaving most of the roots exposed, a number of shoots had grown 
up from the trunk. Mr. 0 . H. Harrison, manager of the estate, 
is mentioned as being at work upon a machine for tapping the 
trees, which will do less harm to the trees than tapping with the 
“machete,” while the opening made in the bark will permit the 
latex to flow more freely than where trees are tapped by the old 
method. 
(B) 
A committee of bondholders who visited this plantation, the Mexi- 
can Mutual Planters’ Co , recently reported on the progress of the 
various cultures there, the chief of which, to date, is coffee. There 
