Tae MicroscoricaAL NEws 
AND 
NORTHERN MICROSCOPIST. 
No. 32. AUGUST. 1883. 
MAX BORNE’S CALIFORNIAN INCUBATOR. 
'HIS apparatus is a complete little hatching apparatus adapted 
for bringing fish-eggs to any desired degree of maturity, or 
hatching them out altogether, the fish remaining in the apparatus, 
when the latter is the object in view, until the absorption of the 
umbilical sac. 
No preparations of any kind are needful to put the incubator 
into working order; all that is required to set it at once into 
operation is a constant supply of water, furnishing } to 2 of a 
gallon per minute. 
Fig. 54. 
The eggs are placed on the wire-netting bottom of the tray ¢ 
and the water, entering the outer division 4 of the hatching- 
trough, flows upwards through the wire-work and ova, and is dis- 
charged at the spout e of the apparatus. Immediately under this 
spout—which is at first quite open and unguarded to allow the 
empty egg-shells to be carried off by the current—a second trough 
£ — so-called “ catch-trough” — must be placed, in order to 
VOL. III. 
