vii. 



The greatest care is taken to adapt each instrument to the climate and 

 conditions in which it is required to be used ; and, as all are plainly and 

 truthfully described, intending purchasers may at once know the real 

 capabilities of any they may desire to select. 



A TABLE OF CONTENTS, and general Index, referring to the number of 

 each article, together with ample illustrations, will enable the reader readily 

 to find any instrument or apparatus required. 



The utmost attention is given to shipping, packing, etc., so that even 

 trivial loss from this cause is of the rarest occurrence. 



With orders from the country or abroad, instructions should be given as 

 to the mode of conveyance, shipment, etc. ; and, in all first transactions, 

 it is requisite to send either a reference or approximate remittance, or 

 order for payment in London. 



MEECHANTS, SHIPPEES, AGENTS, ETC., sending orders, will find the 

 most liberal attention given to meet their interests and desires. 



LOUIS P. CASELLA. 



147, HOLEOEN BAES, LONDON, E.C. 



August, 1871. 

 REMOVED FEOM 23, HATTON GA.BDEN. 



N.B. I regret to have to caution intending purchasers (particularly at a 

 distance) against false imitations of many of my articles, not only by evasive 

 descriptions, but even to the extent of affixing my name. To prevent this 

 as far as possible, consecutive numbers are affixed to all my specialities and 

 first-class instruments. Purchasers are therefore respectfully solicited to apply 

 for them either direct, or to respectable agents only ; see that the name is 

 properly spelt, and give direct intimation of any such attempt which may 

 come under their notice, that every care may be taken to meet siich conduct 

 as it deserves. 



