APPENDIX. 



V 



If in strata, — what are tlie thickness, inclination to the horizon, and direction with respect to 

 the compass, of the beds? — [If these cannot be measured, an estimate should always be recorded, 

 while the objects are in view.] — Are they uniform in dip and direction ?— curved, or contorted? — 

 continuous, or interrupted by fissures or veins ? 



Is the whole cliff, or mass of strata in sight, of uniform composition ? — or does it consist of 

 different kinds of stone ? 



If the strata be different, — what is the order in which they are placed above each other 

 successively ? 



10. A label, distinctly written, should accompany every specimen, stating its native place, its 

 relative situation, &c. &c. And these labels should be connected with the specimens immediately, 

 on the spot where they are found*. — This injunction may appear to be superfluous ; but so much 

 valuable information has been lost to geology from the neglect of it, that every observer of experience 

 will acknowledge its necessity ; and it is, perhaps, in practice one of the most difficult to adhere to. 



11. A sketch of a coast or cliff, however slight, frequently conveys more information respecting 

 the disposition and relations of rocks, than a long memorandum. If numbers, denoting the situation 

 of the specimens collected, be marked upon such sketches, much time may be saved at the moment 

 of collecting. But in all such cases, the memorandum should be looked over soon afterwards, and 

 labels distinctly explaining their situation, &c., be attached to the specimens themselves. 



12. The specimens should be so packed, that the surfaces may be defended from exposure to 

 air, moisture, and friction : for which purpose, if strong paper cannot be obtained, dry moss,-(- or 

 straw, or leaves, may be employed.^ Where paper is used for wrapping the specimens, they are 

 best secured by fastening the envelope with sealing-wax. 



Lastly, The collector must not be discouraged, nor be prevented from collecting, by finding 

 that the place which he may chance to visit in a remote situation, has not a striking appearance, or 

 the rocks within his view a very interesting character ; since it frequently, and even commonly, hap- 

 pens, that facts and specimens, in themselves of very little importance, become valuable by sub- 

 sequent compaiison ; so that scarcely any observation, if recorded with accuracy, will be thrown 

 away. 



* It is useful to mark on the labels the clay, and even the hour, when each specimen is collected. This, with 

 a corresponding note in tlie menioianduir.-book, will be found to assist the memory, and prevent confusion. 

 Besides the label attached to the specimen, it is a very necessary precaution in India, to describe the locality, &c., 

 of the specimen on a separate slip of paper, to be well doubled up and enclosed in the same wrapper with the 

 specimen. 



t Cotton, wool, or sunn. 



} Kalajeera seeds, or pounded spices, should be scattered amongst the parcels to preserve the labels and 

 wrappers from insects. 



3 Y 



