Oct. 24, 1884.] 



♦ KNOWLEDGE . 



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structed that the pan may be elevated to a height of about 

 11 ft., and securely locked, so that it cannot possibly 

 become displaced. The slide, moreover, can be fixed in 

 any desired position by means of a ■wheel-nut, •nhich 

 works on a screwed taper portion inside the nut ; this 

 taper portion of the slide is cut into .«ix divisions, and by 

 screwing the nut down, it causes the taper [lortion to con- 

 tract and grip the slide, thereby holding it in any position. 

 An item of the utmost value in the exhibition of sul- 

 phurous acid for fumigating purposes is secured by the use 

 of this appliance. It may be raised close to the ceiling of 

 the room with absolute safety, the re-agent may then be 

 ignited, and the fumes will descend, in virtue of their 

 gra^•ity, to do their work of disinfection. We may sum \ip 

 the advantages to be gained by its use by calling it simple 

 in construction, portable, eflfective in employment, and free 

 from all the dangers which prevail when sulphurous acid 

 gas is ordinarily u.?ed. 



Two other fumigating methods of value are those intro- 

 duced by McDougall Brothers, of 10, Mark-lane. The 

 first of these provides for a generation of carbolised vapour; 

 it consists of a small petroleum oil stove that burns without 

 smell and requires no chimney, but yet suffices to produce 

 the slight heat required for the expulsion of the carbolic 

 vapour. It is designated a germicide. 



McDougall's apparatus for the application of sulphurous 

 and carbolic fumes in combination, is worthy of the atten- 

 tion of everybody interested in sanitary reform. He has 

 introduced two methods for the fulfilment of his design. 



The first consists in the admixture of two powders, termeeJ 

 " McDougall's Disitfecting Powder " and "Acid Powder," 

 respectively ; no ignition is required, and the whole process 

 is economical, trustworthy, and free frt.m all dangers-. 

 The other plan we do not think quite so good as the fore- 

 going, inasmuch as it requires the use of liquid sulphuric- 

 acid and a powder, the application of which in the hands 

 of servants is apt to become somewhat dangerotis ; yet . 

 nevertheless, it is an advance on all former methods. 



In conclusion, we would direct the attention of our 

 readers to the exhibit of the London Patent Automatic 

 Disinfector Company, of 53, Queen Victoria-street, Londor , 

 E.G., whose apparatus for the healthy maintenance of soil- 

 pipes in houses deserves more than ordinary mention. 

 Appended we give a quotation from their prospectus: — 



The invention of this antomatic apparatus fully supplies a want 

 long felt in every household, however good may be the sanitary 

 arrangement as regards closets and drains ; indeed, its advantages- 

 must be patent to the most casual observer. The application of 

 the apparatus effectually neutralises and destroys the foul gases, 

 while disinfecting and deodorising all objectionable matter, and nor- 

 only deodorises, but is a test of the cleanliness of the closet itself, 

 as well as the purity of the water in the cistern ; and by copiously 

 flushing the drains' with a powerful disinfectant every time tht-- 

 w.c. is used, and always leaving disinfectant remaining in the pan, 

 all germs of disease are destroyed that would otherwise inevitably 

 escape into the house. 



The apparatus is applicable to any kind of closet or urinal, is 

 fixed entirely out of sight without disturbing the pipe, the cost of 

 which is £1. 12s. 6d. It will contain sufficient disinfectant for 

 10,000 gallons of water, which, under ordinary circumstances. 



