L 84
The results so far obtained in Kowloon would appear to indicate that if the storage of clean water could be completely done away with by laying on a continuous tap supply into the houses, the chief breeding places of Stegomyia fasciata would be destroyed. This remedy would necessitate a sufficient supply of water as probably twice the present amount of water would be used or wasted. Cisterns should not be allowed unless completely protected.
No Stegomyia fasciata in the City of Victoria.--The miscellaneous jars in houses and backyards in Victoria have been very thoroughly examined with the result that in only three cases have Stegomyia fasciata larvæ been taken.
These three finds are widely separated, being in Wellington Street, Jervois Street and Des Voeux Road West. The miscellaneous receptacles are therefore even less infected with fasciata than in Kowloon. Water is laid on to taps in all houses in Victoria being in this respect the opposite to what obtains in Kowloon. For about seven months in the year, the supply is continuous; in the remaining five months, it is intermittent but never less than two hours per day.
A relatively very large amount of storage receptacles are kept and are put into use during the intermittent period but are very largely disused during the continuous supply.
At the time of my inspections, the City was on the continuous supply and any storage barrels in use were full to overflowing. It was therefore not practicable to make any thorough examination.
Further search is delayed till the intermittent supply is brought into force again when a thorough search of the stored water will be made.
Junks in the Harbour of Hongkong.--1,500 visits were made by the two Police Collectors to junks and Chinese cargo lighters in the Harbour. No fasciata larvæ were obtained.
Tabanidæ Investigation. In collaboration with Mr. Adam Gibson, M.R.C.V.S., Colonial Veterinary Surgeon, who originated the work, an investigation of this well-known family of biting flies has been started and is still in hand.
1,508 specimens have been forwarded to the Director of the Imperial Bureau and a preliminary list dealing with 395 of these has been received and contains the following species:--
Tabanidæ.
1. Chrysops dispar, F.
2. C. striata, Wulp.
3. Tabanus crassus, Walk.
4. T. ditaeniatus, Macq.
L 84
The results so far obtained in Kowloon would appear to indicate that if the storage of clean water could be completely done away with by laying on a continuous tap supply into the houses, the chief breeding places of Stegomyia fasciata would be destroyed. This remedy would necessitate a sufficient supply of water as probably twice the present amount of water would be used or wasted. cisterns should be allowed unless completely protected.
No
Stegomyia fasciata in the City of Victoria.--The miscellaneous jars in houses and backyards in Victoria have been very thoroughly examined with the result that in only three cases have Stegomyia fasciata larvæ been taken.
These three finds are widely separated, being in Wellington Street, Jervois Street and Des Voeux Road West. The miscellaneous receptacles are therefore even less infected with fasciata than in Kowloon. Water is laid on to taps in all houses in Victoria being in this respect the opposite to what obtains in Kowloon. For about seven months in the year, the supply is continuous; in the remain- ing five months, it is intermittent but never less than two hours per day.
A relatively very large amount of storage receptacles are kept and are put into use during the intermittent period but are very largely disused during the continuous supply.
At the time of my inspections, the City was on the continuous supply and any storage barrels in use were full to overflowing. It was therefore not practicable to make any thorough examination.
Further search is delayed till the intermittent supply is brought into force again when a thorough search of the stored water will be made.
Junks in the Harbour of Hongkong. -1,500 visits were made by the two Police Collectors to junks and Chinese cargo lighters in the Harbour. No fasciata larvæ were obtained.
Tabanida Investigation. In collaboration with Mr. Adam Gibson, M.R.C.v.s., Colonial Veterinary Surgeon, who originated the work, an investigation of this well-known family of biting flies has been started and is still in hand.
1,508 specimens have been forwarded to the Director of the Imperial Bureau and a preliminary list dealing with 395 of these has been received and contains the following species:--
Tabanida.
1. Chrysops dispar, F.
2. C. striata, Wulp.
3. Tabanus crassus, Walk. 4. T. ditaeniatus, Macq.
No comments yet.
Private notes are available after approval.