NOTES AND QUERIES. 



459 



When we consider the immense Lapse of ages which have interrened between 

 the time when the AYealden beds were formed, and the present age, it certainly 

 is an object of no connnon interest to find almost the identical organization 

 made use of when a similar being is called into existence, even after the lapse 

 of countless ages. 



Does not this fact point rather to some universal law, according to which cer- 

 tain structures were associated witli certain forms, predetermined by Him, to 

 whom time is as nothing, ratlicr tlian to a law of incessant change or develop- 

 ment through successive ages — John Edw. Lle, E.G.S. 



BRiTisn Brachiopoda. — [Extract of letter IVoui T. Davidson, Esq.] — 

 " I can assure you that I have never worked harder than dimng the pre- 



good work. You will be glad to learn that I have been attacking the genus 

 Productus, and have made out thirty species in the British Carboniferous 

 strata, rejecting many old ones, however, and introducing others new to England. 

 Among these I may name Frod. armineus, P. proboscideus, P. si/iuat/(s, P. 

 Keijseiiingiana, P. araiareus, P. W right ii, and one or two more. I have 

 spared no trouble in assembling all the best British material. I sliall try to 

 complete my Carboniferous Monogra})h next year : it will contain fifty or more 

 plates ; and hope to be ready soon with anotlier part for the Pala^ontological 

 Society. I have also worked out the Indian Carboniferous species, and have two 

 or three more papers in hand for the winter." 



Exchanges and Purchases op Eossils and Books. — Sir, — I think many 

 of your subscribers ^vill be, like myself, desirous of making exchanges of dupli- 

 cate fossils, without knowing to what gentlemen to apply. I think it 

 would be well if you could invite geologists to send in their names and places 

 of abode, and particularly also the characteristic strata of their localities, that 

 we might enter into correspondence with one another, so as to make such ex- 

 changes as we desire for our private collections. Example. — Cretaceous Eorma- 

 tion. — Upper Chalk, Middle Chalk, Ptcd Challc— Robt. Mortdier, Eimber, 

 Malton, Yorkshire. 



VV^e shall be happy to assist in these exchanges, as we have said on many 

 former occasions. It seems to us, however, that the best way would be to 

 open a page in our advertising sheet at a small fee, where we would print the 

 names of fossils offered, and those required in exchange. Erom numerous 

 applications for the purchase of geological works, we think it would also be desir- 

 able to do the same with regard to books, quoting those offered for sale and 

 those which are wanted for purchasers. — Ed. Geol. 



Meteorite oe Agram. — Director Haidinger communicated last year to the 

 Imperial Academy of Vienna the original document, written in Latin, concern- 

 ing the fall of this iron mass, as observed by eye-witnesses and confirmed by 

 the official testimony from the ecclesiastical authorities of Agram. Another 

 contemporaneous document, illustrated by a drawing, gives an account of the 

 same phenomenon, as observed at Szigethvar, fifteen Austrian miles east of 

 Agram, by some officers and clergymen. The apparent diameter of the fiery 

 globe, as observed at this place, was equal to that of the sun, which (if its 

 altitude, as calculated from this and other observations, amounted to about ten 

 German miles) answers to a real diameter of more than three thousand feet. 

 This, if compared with the soKd mass which fell to the ground (fifty-seven feet 

 in all), indicates an enormous development of ignited gaseous substances. 



The luminous train of the bolide perished more or less distinctly from six to 

 ten p.m. The apparent point of its departure, as made probably by the direc- 

 tion of its orbit, was the consteUation of Perseus, from which next to Leo the 

 majority of igneous globes are apparently proceeding, as observed by MM. 

 Olmsted, Heiss, Tul, Schmidt, &c. 



