V 



It would appear that the meteorological observations, till printed 

 in London in 1872, stood on the same platform with the mag- 

 netical. And in the absence of any exact information, perhaps 

 the impossibility of now recovering it, what I should deduce from 

 Boileau's statements is this : — that all the Simla observations were 

 printed by him at his Observatory press, but that for some reason, 

 very possibly his desire to accompany the publication with prolegomena 

 and some indication of results, for which he never found time in 

 India, he was induced to defer their issue : that he had intended to 

 carry the work to completion in England after his retirement and 

 establishment in a home there ; but that, in consequence of the break- 

 ing oat of the Mutiny shortly after his departure from India, the 

 despatch was delayed, and in the following year the fire occurred 

 which consumed the whole. 



We may here insert a list of books of tables of divers useful kinds 

 which were prepared and issued by Boileau during his residence at 

 the Observatory, or in the immediately succeeding years. 



1. Tables (from Apjohn's formula) for determining the Elastic 

 Force of Aqueous Yapour. 



2. Ivory's Tables of Mean Astronomical Refractions ; Revised and 

 Augmented. 



3. Mathematical Tables ; comprehending Logarithms of all 

 Numbers from 1 to 10,000, also Logarithms, Sines, Tangents, and 

 Secants, to Six Places of Decimals. 



4. Oltmann's Barometrical Tables. 



5. A Collection of Tables — Astronomical, Meteorological, and Mag- 

 netical ; also for Determining the Altitudes of Mountains ; Com- 

 parison of French and English Weights and Measures, &c. 



6. Tables of Wages and Rent ; of the Value of Goods ; for convert- 

 ing Seers and Chittacks into Decimals of a Maund, also Annas and 

 Pice into Decimals of a Rupee. 



7. Tables for facilitating the Computation of the Time from single 

 Altitudes. Roorkee, 1858. 



To these we may add : — 



8. Meteorological Observations made at the Magnetic and Meteoro- 

 logical Observatory at Simla during the years 1841-45, under the 

 direction of Lieut. -Colonel J. T. Boileau, F.R.S., Superintendent of 

 the Observatory. Published by Order of the Right Hon. the Secre- 

 tary of State for India in Council. 



Boileau's work while at Simla was by no means confined to that of 

 the Observatory. During the years he spent there a great variety of 

 occasional and useful tasks were either committed to him by Govern- 

 ment, or voluntarily undertaken. 



After the Observatory work came to an end, Boileau filled the office 

 of Superintending Engineer successively at Ambala and Meerut, till 



