262 



THE ESSEX FIELD CLUB. 



" The water is absolutely pure and very soft, as the following analysis made by 

 Dr. J. C. Thresh, at the County Public Health Laboratories, Chelmsford, in 

 March, 1902, will show : — 



*• Saline Constituents of a sample of water from Great Baddoiv (Bore} 

 Waterworks. 



" Estimated in -parts per 1 00 ■ 000. 



Ca. 



•8 



Mg. 



•3 2 5 



Na. 



147 



3'5 

 24*45 



Probable Combinations. 



Calcium Carbonate ..! 2-o 

 Magnesium Carbonate! i*i 

 Sodium Carbonate . . 33-9 

 Sodium Sulphate . . 108 

 Sodium Chloride ..62*05 

 Nitrates, etc. . . . 1*65 



Total solid constituents dried at i8o : ' C. 



I'll': 



" Other determinations : 



Hardness, Temporary or Permanent — total . . . . 4 



Free Ammonia . . . . . . . . . . o- 08 



Organic Ammonia . . . . . . . . . . 0-002^ 



Oxygen absorbed in four hours at 27 C. . . . . . 0-012° 



Nitrates .. .. .. .. .. ..Nil. 



" Note.— To convert the above parts per ioo-ooo into grains per gallon 

 multiply by -7." 



The party now proceeded across the road to the large gravel pits known as 

 the Old Bee Hive Quarry, where they were met by the owner, Mr. Robert 

 Jackson, who afforded every facility for the examination of this interesting section- 



The gravel is worked to a depth of 45 ft. The lower portion consists of 

 finely stratified gravel, above which is a gravel arranged somewhat tumultuousiy. 

 In the surface soil above fragments of Roman or Romano-British pottery are 

 occasionally found. Mr. Jackson exhibited to the members some pieces recently 

 obtained. 



The constituents of the gravel are principally flints, some of which are over a 

 foot long. Sarsens of moderate size occur, the one at the "Beehive " close by 

 having been obtained from this pit. Others were seen lying about. Quartz 

 blocks and large pebbles from the Bunter formation were abundant, and many 

 small boulders of Rhyolite similar to those found at higher levels (cf. Beggar Hill, 

 near Fryerning) at 300ft. O.D. Some large blocks of conglomerate resembling 

 Hertfordshire " Pudding-stone " also occur. 



The materials appear to be derived from higher and older gravels which 

 formerly existed to the south and west. 



Mr. Jackson kindly provided some photographic picture-cards as mementoes 

 of the visit. A very hearty vote of thanks was given to him for his assistance 

 and courtesy. 



The drive was then continued to Danbury Palace, where the members were 

 heartily and hospitably received by Sir Thomas Hanbury, K.C.V.O., and an 

 inspection made of the house and pictures. Under Sir Thomas' guidance a very 



