xx THE JOURNAL OF THE MINISTRY OF AGRICULTURE. — Advertisements . 



Why build expensively ? 



The Cyclops way is the economical 

 way. Its efficiency is unquestioned. 



With Cyclops blocks one can build a house from cellar to roof with raw materials 

 frequently found on the site. Cyclops blocks made on Cyclops machines have been 

 used for the building of houses, picture palaces, libraries, garages, silos, farm buildings 

 and many others. One Cyclops block is equal to 12^ bricks. 



They are now being used for the construction of Railway Stations in Nigeria. Whether 

 made with semi or complete cavity blocks, the building built the Cyclops way will be 

 cool in summer and dry in winter. The rich face down mixture concrete renders the 

 blinks impervicus to moisture and obviates the use of waterproofing compounds or 

 rough cast wo r k. Any man can lorn how to operate Cyclops machines and to build with 

 the blocks by usin^ the C> clops patented mortar gauge. This enables an even quantity 

 of mortar to be placed on each block and ensures alignment, and enables unskilled men 

 to build both in blocks (ft sla s after a week's tuition. Concrete work can be carried out 

 in frosty or inclement weather by the use of the Cyclops Patent Indurating Process. 

 Porous Drain Pipes quickly drain agricultural land. Moulds for same can be made up to 

 4 ft. 6 in. diameter. 



Fcr.ce Posts, Building Blocks, Slabs or any other form of Concrete made to order. 



Send for our new 32 page catalogue. 



The Cyclops Concrete Company, 



HSLBRE STREET, LIVERPOOL. 



Telephone: ROYAL 1195. EST AB. 1882. Telegrams: " ASSESSOR." 



Certain 

 Destruc- 

 tion to 

 RATS 

 and 

 MICE 



is assured by the 

 well-known 

 preparations— 



Danysz Virus 

 Haller's Extract of Squill 

 1 Danzo Bat Killer 



Write for particulars to the proprietors— 



Haller Laboratories, Limited 



(formerly Danysz Virus, Limited), 



325, Borough High St 

 London, S.E. 



The Journal of tiie Ministry of Agriculture 



Net Sale Certificate. 



I hereby certify that the average 

 monthly net sales of The Journal 

 of the Ministry of Agriculture, all 

 editions carrying advertisements, 

 after deducting all free vouchers, 

 complimentary and advertising 

 copies, and all returns, for the half 

 year ending 30th September, 1921, 

 were 9,687 copies per issue. 



In addition to sales, the average 

 number of copies distributed to 

 Officials of the Ministry, County 

 Inspectors, Agricultural Com- 

 mittees, Agricultural Societies, and 

 agricultural experts and writers, was 

 1,187 monthly, which, while not 

 being a sale of circulation, is never- 

 theless effective and guaranteed. 



(Signed) F. L. C. Floud, 

 Secretary and Accounting Officer. 

 7th November, 1921. 



Sole Agents for Advertisements : 

 C. VERNON & SONS, LIMITED, 

 38, Holborn Viaduct, London, E.C.I. 



