AP — Transactions.— Miscellaneous. 
to the Pozzuolanas of Italy and the Tyrass of the Rhine, but as they are only 
used in combination with lime, they will be considered along with the other 
aggregates, or as a component part of artificial cements. 
The aggregates proper consist of shingle, gravel, and sand, which have 
an almost universal distribution throughout the province. 
Tables of Analyses. 
The subjoined tables Nos. I. to IV. give the analyses of the principal lime 
and cement stones hitherto discovered in Otago, together with English and 
foreign types. They are arranged into the four classes already referred to, 
viz., 1st, Rich Limes; 2nd, Poor Limes; 8rd, Hydraulic Limes; and 4th, 
Cements. A large number of the analyses of Otago stones are from the 
Jurors' Report of the New Zealand Exhibition and the publications of the 
Colonial Museum, but all the recent ones are by Professor Black, to whom 
I am very much indebted for assistance in investigating this subject. 
Under his direction fifteen analyses of limestones and clays were made 
specially for the purpose of this paper by Mr. P. S. Hay, B.A. These 
analyses were done with great care and accuracy, and in the most exhaustive 
manner, consequently they form a valuable contribution to our information 
on one of the most important colonial resources. 
Rich Limes. 
The English and foreign types given in Table I. comprise eight examples 
that range in purity from statuary marble, a pure carbonate of lime, to the 
carboniferous limestone of Whiteford in Wales, that has ten per cent. of 
impurities. It will be observed that ordinary white chalk approaches next 
to marble in purity, it only contains } per cent. of foreign ingredients. 
Analyses are given of fifteen Otago limestones that furnish rich limes, 
which shall now be considered seriatim. 
No. 9 is a white, compact, crystalline stone from Southland, locality 
unknown, probably Winton. Its constituents are 98-80 per cent. of carbon- 
ate of lime, and 1-20 per cent. of soluble silica. — It is thus entirely worth- 
less as a cementing material. 
No. 10. A compact crystalline stone of faint yellow colour from Winton, 
evidently closely allied in all its essential properties to the preceding one, 
and equally deficient in cementitious qualities. I believe that these two 
specimens are fair samples of the stone in the vicinity of Lime Hills, 
Winton, of which there are about 1000 acres. 
No. 11. Fossiliferous, compact, and very hard stone of a dirty yellow 
colour, from Kakanui. This specimen was analyzed by Professor Black for 
Mr. Cairns. It contains 98 per cent. ot carbonate of lime and magnesia 
and 14 per cent of sand, consequently must be placed in the same bito 
as the Southland limes. The stone is burned extensively for building 
