236 MONTHLY WEATHER REVIEW. MAY, 1917
SOME NEW WSTEUMENTS FOR OCEANOGRAPHIC& RESEARCH.
SUPPLEMENTAL NOTE.
In the Apid, 1917, issue of this REVIEW, p. 159 ff-. appears am interesting contribution on the above SUE! ject by Dr. Hans Pettersson. As there stated in footnote
3 on page 163, the author’s Table 1 and one illustrrttioii had been delayed in the mails. We here print both the missing items.
B
B
FIG. 5.--H. Petterson’s prra,ion thin-coinpensated areometer, with gin.1 31 .uspnl- sion.
BUHB. gimbrl mountiug,\i it11 cuunterpoises. AA, Dewar flask wsx4 a i t l l Umt and chain.
The interested zender will recall that on page 162,
column 3, Dr. Petteisson mentions a ginil>:il-nioiiiit,eil precision cliRiii-conipeiisnt,eil weoniet er of about 800
cu. a n . capacity suitable for the accurate daily work oil
shipboard of nil hydro raphical especlitioii. This instru- ment is here iUustrate 5 in figure 5.
TABLE I.-Obstn.ntioolls ic.itL rhrrba-eonipei~satcd giinbal arcoinetm.
srrltrx.
II
10 “0
30 40
50
60
(29.51) 50.11
31.35 X2. i 7 a2.9.5 (83. OB) 33. os
29.51 30.08 31.32 32.74 32. s5