23 



small specimens cannot get entangled in it. The liquid must on 

 no account be allowed to dry up. When they are to he forwarded 

 all the small bottles should be placed in a large, wide-mouthed 

 bottle with a good sound cork or a glass stopper, or better still, 

 a screwed-on lid with rubber ring. In this the small bottles 

 should be packed lightly with wool, horse-hair, or soft paper 

 screw^ed up into loose balls, and the whole filled up with 

 the fluid. It is a good plan, if the large bottle or jar is well 

 stoppered and protected against breakage, to leave the small 

 bottles without corks, simply plugging their necks with a pellet of 

 cotton-wool or a stopper of pith — e.g. elder-pith — and then stand 

 them upside-down in the large jar. There is then much less risk 

 of the fluid in the small bottles getting dried up, so long as there 

 is plenty in the big jar. Air-bubbles in the small bottles should 

 be avoided as far as possible. 



N.B. — Small bottles packed in this way, immersed in fluid, 

 must have their labels inside, and not gummed on the outside. 



These " Instructions " have been drawn up by Mr. H. A. 

 Baylis, Assistant, Department of Zoology. 



Sidney F. Harmer, 



Keei)cr of Zoology. 



Be:tish Museum (Natural Histoey), 



Cromwell Road, 



London, S.W. 

 February, 1915. 



LONDON ; I'KINTKD nV WII.I.IAM CLOWES AND SONS, MMITEIl. 

 Dl'KE SrUEET, STAMFORD STREET, S.E., AND GREAT WINDMILL STREET, W. 



