350 Report of the Naliojial Faccine Establishment 



of the dip*. It would also be advisable to tnnke corrections for 

 the form of the needle, and the effect which its reaction pro- 

 duces upon the magnetism of the sphere; on these points how- 

 ever I shall take some future opportunity of speaking more fully. 

 I am, sir, 



Your most obedient humble servant, 



Charlks Bonnycastle. 



* From this circumstance itfollou's, that if a ships compass be moved until 

 the bull, placed according to Mr. Barlow's plan, has its centre in the plane of 

 the needle, the attraction for all parts of the icorld trill be the same. 



LV. Copij of the Report to the Secretary of Slate for the Home 

 Departmetit, from the National kacci/ie Establishment j 

 dated 18th Mot/ 1S20. 



To the right hono7irable Lord Viscount Sidmoulh, principal 

 Secretary of State for the Home Depart7nent, ^c. 



National Vaccine Establishment, 



T Percy-street, May IS, 1S20. 



HE Board of the National Vaccine Establishment 

 have the honour to report to your Lordship, That the numiier of 

 persons vaccinated during the last year, in London and its vici- 

 nity, exceeds the number of any former year; it amounts to 

 S,957. Within the same year, 51,005 charges of vaccine lymph 

 have been distributed to the public. 



An abundant, an unceasing supply, which could only be af- 

 forded by such an institution as that which the Board have the 

 honour to direct, has enabled us to answer the earnest demands 

 for vaccine lymph, from various parts of Great Britain and Ire- 

 land, — from Jamaica, St. Vincent's, Dominica, Tcrtola, Grenada, 

 Nevis, Montserrat, Antigna, St.Christoj)her's, Denierara, Hayti, 

 and the Cape of Good Hope. 



Lymph has also been occasionally requested from the Conti- 

 nent of Europe, and charges were lately transmitted to Ham- 

 burgh and Hanover. 



Our correspondents in Great Britain and Ireland have reported 

 to this Board, that the number of persons vaccinated by them 

 during the year 1SI9 amounts to 74,940; forming with the 

 number vaccinated ir, London and its vicinity a total of So. 897 

 persons in one year ; yet many send no returns, or the number 

 would be considerably greater. 



From these facts the Board think themselves entitled to con- 

 clude, that the practice of vaccination in His Majesty's dominions 

 continues to advance, and therefore that the coni-idence of me- 

 dical practitioners, and the confidence of the public in that prac- 

 tice, remain unshaken ; notwithstanding many unfavourable 



occurrences. 



