Show 7 v 1 y 1 1 Tt 3 j. ft v. v i Kill Mosquitoes Mosquito s by Electricity t 01 0 op 1 bL 4 j rift rP H J Or T iN AN ANC f fl- fl rIC fl 8 S- S V w c C- C ram O D 0 f f Vf CANDLE ANGLE fOt 1 4 Eo E S L D l WOn nn r u lII D 1 J u o i. i f e ea a R A Et EtI I i I r n k L r Lt l h I. I to t. t b I b b I. I j 0 TH l worry me Ii f rosr V 79 o ll j Out in the swamps near Brookline Mass there is a machine imitating the call of the female mosquito And every mosquito which answers it Is lured to its death The that current that sin sings s this siren song kills the pasts It was a practical application of the discovery that a certain musical note rais raised d to a great number of vibrations a second wilt will cause cause the insects to plunge directly towards the spot whence the sound issues Once hav hav- ing made the plunge they ther run into the electrically charged machine and there is a dead mosquito ti a aThe The apparatus which the electrician sets up consists of a large lamp shade hung from a socket a few feet above the pool or swamp Attached to this will be a pair of ordinary magnetic coils of about 1000 ohms resistance with an attuned and delicately adjusted adjust adjust- r ed vibrator placed between the poles t of the coils colls j |