224 
Culicifuges 
As food for the insects in intervals of blood-sucking, syrup (honey and 
water) was supplied, as shown in Fig. 1. A flask of water contained a tube 
formed of several thicknesses of blotting-paper with a piece laid horizontally 
over the top; on this a little syrup was poured and was kept constantly moist 
whilst water remained in the flask. 
The presence of water to which the mosquitoes have access for drinking 
and oviposition, is essential to maintain them alive and feeding for any length 
of time; in order to prevent drowning, dried beech leaves were placed in the 
tins. 
As a certain mortality is sure to occur, a continued supply of adult 
mosquitoes is necessary to replenish the cages. The eggs which are deposited 
on the leaves in the tins of water hatch, and the larvae thus obtained will 
afford a reserve of pupae from which the mosquitoes are bred. 
Fig. 1. Arrangement for preventing evaporation of syrup. F. Flask containing water. T. Tube 
formed of blotting paper. B. Blotting paper to receive syrup, placed over top of flask. 
V. DETAILS OF PREPARATIONS TESTED. 
No. 1. Oil of Cassia, 1 oz., Brown Oil of Camphor, 2 ozs., Vaseline, Lanoline, or Salad 
Oil, 3 ozs. (Prepared with wax.) 
No. 2. Oil of Peppermint, 1 oz., Oil of Cassia, 2 ozs., Vaseline, Spirit or Pond’s Extract, 
2 ozs. 
No. 2 a. No 2 put up with wax. 
No. 3. Bamber Oil (Citronella Oil, 1| pts, Kerosene, 1 pt, Cocoanut Oil, 2 pts, Carbolic 
1 %). (Prepared with wax.) 
No. 4. Bergamot Oil, 1 pt. Kerosene, 16 pts. (Prepared with wax.). 
No. 5. Eucercit (Eucalyptus Oil, 2 ozs., liquid Carbolic Acid, 4 drops, Citronella Oil, 
2 ozs.). (Prepared with wax.) 
No. 6. Crude Coke Oven Naphthalene, 1 pt, Soft Soap, 3 pts. 
No. 7. “Anti-mosquito Cream.” (Prepared by Messrs Burgoynes.) 
