FATHOMS AND METRES 



419 



bar. 29, falling); temperature (of rock pools) ; ground 

 (rocks with Fucus on the point, some pools, the rest 

 fine sand with isolated rocks). For animals and plants 

 note the following kind of thing : Dry or submerged ; 

 in sand, or mud, or on rock ; under rocks or stones ; 

 adhering or washed out from weed or rock ; sifted out 

 of sand ; relation to H.W. and L.W. marks, etc. A 

 specimen by itself has very little Value ; a specimen 

 with full notes of its habits and habitat is a discovery. 



1 fathom 



2 fathoms 

 3 



4 » 

 5 



6 „ 



7 » 



Conversion of Fathoms and Metres. 



= 1-8288 metres 



= 3'6576 



= 5-4864 



= 7'3i52 



= 9-1440 



== 10-9728 



= 12*8016 



= 14-6304 



= i6-459 2 



1 metre = 0-5468 fathom 



2 metres = 1*0936 fathoms 



3 , 



= 1-6404 



4 , 



= 2*1872 ,, 



5 , 



1 =2-7341 



6 , 



, =3-2809 



7 , 



, =3-8277 



8 , 



■ =4*3745 



9 . 



■ =4-9213 



A little use of the decimal point will enable any conversion 

 of fathoms into metres, or the converse. Thus, suppose that 

 it is desired to find how many metres are equal to 1,537 

 fathoms : — 



1,000 fathoms = 1,828*80 metres 



500 „ - 9 J 4-40 » 



30 „ = 54-86 „ 



7 ,, = I2*80 



1,537 fathoms= 2,810*86 metres 



Thermometry Conversion. 



The following tables can be used for air temperatures and 

 •ordinary work ; but, as having only one place of decimals, 

 they are not accurate enough to satisfy the modern 

 hydrographer. 



